Mapping Mountains - Significant Name Changes - 100m Twmpau

 

100m Twmpau – Significant Name Changes

The 100m Twmpau (thirty welsh metre prominences and upward) are the Welsh hills at or above 100m and below 200m in height that have a minimum drop of 30m.  Accompanying the main P30 list is a sub list entitled the 100m Sub-Twmpau with the qualification to this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop.

The list is authored by Myrddyn Phillips and the posts that have appeared on Mapping Mountains detailing the significant name changes to the main P30 list and the sub list appear below presented chronologically in receding order.

Mapping Mountains - Significant Name Changes - 100m Twmpau

Parc Cwarre (SN 304 203) - 105th significant name change

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales, with the summit height, bwlch height and their locations, the drop, dominance and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Parc Cwarre (SN 304 203)

The criteria for the two listings that this name change applies to are:

100m Twmpau – Welsh hills at or above 100m and below 200m in height that have 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau, with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

Y Trechol – The Dominant Hills of Wales – Welsh P30 hills whose prominence equal or exceed half that of their absolute height.  With the criteria for Lesser Dominant status being those additional Welsh P30 hills whose prominence is between one third and half that of their absolute height.  The list is authored by Myrddyn Phillips with the Introduction to the start of the Mapping Mountains publication of this list appearing on the 3^rd December 2015, and the list is now available in its entirety on Mapping Mountains in Google Doc format. 

Y Trechol - The Dominant Hills of Wales by Myrddyn Phillips

The hill is adjoined to the Mynydd Pencarreg group of hills, which are situated in the south-western part of South Wales (Region B, Sub-Region B1), and it is positioned with the B4298 road to its north, a minor road to its south-west, the B4299 road farther to its west and a minor road to its south-east, and has the town of Sanclêr (St Clears) towards the south south-west.

The hill appeared in the original Welsh 100m P30 list on Geoff Crowder’s v-g.me website, under the transposed name of Penbigwrn, with an accompanying note stating; Name from buildings to the West.

Penbigwrn

151m

SN305203

145/159

177

Trig pillar. Name from buildings to the West.

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a farm and use it for that of the hill.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 1076 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Parc Cwarre in the apportionments, with the details on the Tithe map appearing in the parish of Meidrim and in the county named as Carmarthenshire. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales is Parc Cwarre, and this was derived from the Tithe map. 

 

The full details for the hill are:

Group:  Mynydd Pencarreg

Name:  Parc Cwarre

Previously Listed Name:  Penbigwrn   

OS 1:50,000 map:  145, 159

Summit Height:  151.1m (LIDAR) 

Summit Grid Reference:  SN 30419 20386 (LIDAR) 

Bwlch Height:  73.6m (LIDAR) 

Bwlch Grid Reference:  SN 31896 21238 (LIDAR) 

Drop:  77.5m (LIDAR) 

Dominance:  51.31% (LIDAR) 

 

Myrddyn Phillips (August 2022)

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Parc Penyrheol (SN 463 243) - 104th significant name change

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales, with the summit height, bwlch height and their locations, the drop, dominance and status of the hill derived from detail on contemporary maps produced from Ordnance Survey data. 

The criteria for the two listings that this name change applies to are: 

100m Twmpau – Welsh hills at or above 100m and below 200m in height that have 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau, with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

Y Trechol – The Dominant Hills of Wales – Welsh P30 hills whose prominence equal or exceed half that of their absolute height.  With the criteria for Lesser Dominant status being those additional Welsh P30 hills whose prominence is between one third and half that of their absolute height.  The list is authored by Myrddyn Phillips with the Introduction to the start of the Mapping Mountains publication of this list appearing on the 3^rd December 2015, and the list is now available in its entirety on Mapping Mountains in Google Doc format. 

Y Trechol - The Dominant Hills of Wales by Myrddyn Phillips

The hill is adjoined to the Mynydd Pencarreg group of hills, which are situated in the south-western part of South Wales (Region B, Sub-Region B1), and it is positioned encircled by minor roads, with the A485 road farther to its west, the A40 road farther to its south and the B4310 road farther to its east, and has the town of Caerfyrddin (Carmarthen) towards the south-west.

The hill appeared in the original Welsh 100m P30 list on Geoff Crowder’s v-g.me website, under the invented and transposed name of Banc-y-Llain-cefn-hengil, with an accompanying note stating; Name from buildings to the South-West.

Banc-y-llain-cefn-hengil

172m

SN464244

159

185/186

Name from buildings to the South-West

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a farm and add the words Banc-y- to it.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 2133 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Parc Penyrheol in the apportionments, with the details on the Tithe map appearing in the parish of Abergwili and in the county named as Carmarthen. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales is Parc Penyrheol, and this was derived from the Tithe map. 

 

The full details for the hill are:

Group:  Mynydd Pencarreg

Name:  Parc Penyrheol

Previously Listed Name:  Banc-y-Llain-cefn-hengil   

OS 1:50,000 map:  159

Summit Height:  172m (spot height) 

Summit Grid Reference:  SN 46398 24362 (hand-held GPS via DoBIH) 

Bwlch Height:  111m (spot height) 

Bwlch Grid Reference:  SN 46457 24821 (spot height) 

Drop:  61m (spot height summit and bwlch) 

Dominance:  35.47% (spot height summit and bwlch) 

 

Myrddyn Phillips (July 2022)

Mapping Mountains - Significant Name Changes - 100m Twmpau

Cae Gafell (SN 431 282) - 103rd significant name change

Hill Reclassifications post for Cae Gafell

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Cae Gafell (SN 431 282)

The criteria for the list that this name change applies to are:

100m Twmpau – Welsh hills at or above 100m and below 200m in height that have 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau, with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Mynydd Pencarreg group of hills, which are situated in the south-western part of South Wales (Region B, Sub-Region B1), and it is positioned with a minor road to its north and south, and the B4301 road and the A485 road to its east, has the town of Caerfyrddin (Carmarthen) towards the south.

The hill appeared in the original Welsh 100m P30 list on Geoff Crowder’s v-g.me website, under the transposed name of Allt Glancorrwg, which is a prominent name that appears to the north of the summit of this hill on the contemporary Ordnance Survey 1:25,000 Explorer map and which does not apply to land taking in the summit of this hill.

Allt Glancorrwg

173m

SN432283

146

185

 

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose a prominent name that appears on contemporary Ordnance Survey maps and presume it that of the hill.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 622 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Cae Gafell in the apportionments, with the details on the Tithe map appearing in the parish of Llanpumsaint and in the county named as Carmarthenshire. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Cae Gafell, and this was derived from the Tithe map. 

 

The full details for the hill are:

Group:  Mynydd Pencarreg

Name:  Cae Gafell

Previously Listed Name:  Allt Glancorrwg   

OS 1:50,000 map:  146

Summit Height:  173.4m (LIDAR) 

Summit Grid Reference:  SN 43157 28229 (LIDAR) 

Bwlch Height:  143.1m (LIDAR) 

Bwlch Grid Reference:  SN 42875 27715 (LIDAR) 

Drop:  30.3m (LIDAR) 

 

Myrddyn Phillips (July 2022)

Mapping Mountains - Significant Name Changes - 100m Twmpau

Cae Pant yr Lan (SN 486 219) - 102nd significant name change

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales, with the summit height, bwlch height and their locations, the drop, dominance and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Cae Pant yr Lan (SN 486 219)

The criteria for the two listings that this name change applies to are:

100m Twmpau – Welsh hills at or above 100m and below 200m in height that have 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau, with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

Y Trechol – The Dominant Hills of Wales – Welsh P30 hills whose prominence equal or exceed half that of their absolute height.  With the criteria for Lesser Dominant status being those additional Welsh P30 hills whose prominence is between one third and half that of their absolute height.  The list is authored by Myrddyn Phillips with the Introduction to the start of the Mapping Mountains publication of this list appearing on the 3^rd December 2015, and the list is now available in its entirety on Mapping Mountains in Google Doc format. 

Y Trechol - The Dominant Hills of Wales by Myrddyn Phillips

The hill is adjoined to the Mynydd Pencarreg group of hills, which are situated in the south-western part of South Wales (Region B, Sub-Region B1), and it is positioned with a minor road to its north and west, the A40 road to its south and the B4310 road to its east, and has the town of Caerfyrddin (Carmarthen) towards the west south-west.

The hill appeared in the original Welsh 100m P30 list on Geoff Crowder’s v-g.me website, under the transposed name of Pen-yr-allt, with an accompanying note stating; Name from buildings to the West.

Pen-yr-allt

175m

SN487219

159

186

Clem/Yeaman. Trig pillar. Name from buildings to the West.

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a farm and use it for that of the hill.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 1326 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Cae Pant yr Lan in the apportionments, with the details on the Tithe map appearing in the parish of Abergwili and in the county named as Carmarthen. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales is Cae Pant yr Lan, and this was derived from the Tithe map. 

 

The full details for the hill are:

Group:  Mynydd Pencarreg

Name:  Cae Pant yr Lan

Previously Listed Name:  Pen-yr-allt   

OS 1:50,000 map:  159

Summit Height:  174.7m (LIDAR) 

Summit Grid Reference:  SN 48696 21961 (LIDAR) 

Bwlch Height:  79.0m (LIDAR) 

Bwlch Grid Reference:  SN 49721 22982 & SN 49726 22982 (LIDAR) 

Drop:  95.65m (LIDAR) 

Dominance:  54.75% (LIDAR) 

 

Myrddyn Phillips (July 2022)

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Bryn (SN 274 401) - 101st significant name change

Hill Reclassifications post for Bryn

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived from detail on contemporary maps produced from Ordnance Survey data. 

The criteria for the list that this name change applies to are: 

100m Twmpau – Welsh hills at or above 100m and below 200m in height that have 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau, with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Mynydd Pencarreg group of hills, which are situated in the south-western part of South Wales (Region B, Sub-Region B1), and it is positioned with minor roads to its north-east and south, the A484 road farther to its north-east and the B4332 road to its north-west, and has the town of Castellnewydd Emlyn (Newcastle Emlyn) towards the east.

The hill appeared in the original Welsh 100m P30 list on Geoff Crowder’s v-g.me website, under the transposed name of Allt Pen-rhiw-olau, which is a prominent name that appears to the north-east of the summit of this hill on the contemporary Ordnance Survey 1:25,000 Explorer map and which does not apply to land taking in the summit of this hill.

Allt Pen-rhiw-olau

178m

SN274402

145

185/198

Trig pillar

 

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose a prominent name that appears on contemporary Ordnance Survey maps and presume it that of the hill.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.                                                                             

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 462 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Bryn in the apportionments, with the details on the Tithe map appearing in the parish of Cenarth and in the county named as Carmarthen. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Bryn, and this was derived from the Tithe map. 

 

The full details for the hill are:

Group:  Mynydd Pencarreg

Name:  Bryn

Previously Listed Name:  Allt Pen-rhiw-olau   

OS 1:50,000 map:  145

Summit Height:  178m (triangulation pillar) 

Summit Grid Reference:  SN 27426 40150 (triangulation pillar) 

Bwlch Height:  c 148m (interpolation) 

Bwlch Grid Reference:  SN 28020 40064 (interpolation) 

Drop:  c 30m (triangulation pillar summit and interpolated bwlch) 

 

Myrddyn Phillips (July 2022)

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Parc Hen Bont (SN 429 256) - 100th significant name change

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Parc Hen Bont (SN 429 256)

The criteria for the list that this name change applies to are:

100m Twmpau – Welsh hills at or above 100m and below 200m in height that have 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau, with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Mynydd Pencarreg group of hills, which are situated in the south-western part of South Wales (Region B, Sub-Region B1), and it is positioned with the B4301 road to its north-west and the A485 road to its east, and has the town of Caerfyrddin (Carmarthen) towards the south south-west.

The hill appeared in the original Welsh 100m P30 list on Geoff Crowder’s v-g.me website, under the transposed name of Cerig Fawr, which is a prominent name that appears to the west of the summit of this hill on the contemporary Ordnance Survey 1:25,000 Explorer map and which does not apply to land taking in the summit of this hill.

Cerig Fawr

186m

SN429256

146

185

Trig pillar

 

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose a prominent name that appears on contemporary Ordnance Survey maps and presume it that of the hill.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.                                                                               

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 804 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Parc Hen Bont in the apportionments, with the details on the Tithe map appearing in the parish of Llanpumsaint and in the county named as Carmarthenshire. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Parc Hen Bont, and this was derived from the Tithe map. 

 

The full details for the hill are:

Group:  Mynydd Pencarreg

Name:  Parc Hen Bont

Previously Listed Name:  Cerig Fawr   

OS 1:50,000 map:  146

Summit Height:  186.6m (LIDAR) 

Summit Grid Reference:  SN 42967 25621 (LIDAR) 

Bwlch Height:  157.9m (LIDAR) 

Bwlch Grid Reference:  SN 43584 25599 (LIDAR) 

Drop:  28.7m (LIDAR) 

 

Myrddyn Phillips (July 2022)

 

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Y Lan (SN 283 229) - 99th significant name change

Hill Reclassifications post for Y Lan

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Y Lan (SN 283 229)

The criteria for the list that this name change applies to are:

100m Twmpau – Welsh hills at or above 100m and below 200m in height that have 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau, with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Mynydd Pencarreg group of hills, which are situated in the south-western part of South Wales (Region B, Sub-Region B1), and it is positioned with minor roads to its north, west and south and the B4299 road to its east, and has the small town of Sanclêr (St Clears) towards the south.

The hill appeared in the original Welsh 100m P30 list on Geoff Crowder’s v-g.me website, under the invented and transposed name of Allt Pantyrhedyn, with an accompanying note stating: Name from building to the North-West.

Allt Pantyrhedyn

188m

SN284229

145/158

177

Name from buildings to the North-West

                                                                                    

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a farm and put the word Allt in front of it.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales.

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 316 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Y Lan in the apportionments, with the details on the Tithe map appearing in the parish of Meidrim and in the county named as Carmarthenshire. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Y Lan, and this was derived from the Tithe map.                                                                  

The full details for the hill are:

Group:  Mynydd Pencarreg

Name:  Y Lan

Previously Listed Name:  Allt Pantyrhedyn   

OS 1:50,000 map:  145, 158

Summit Height:  188.0m (LIDAR) 

Summit Grid Reference:  SN 28371 22966 (LIDAR) 

Bwlch Height:  158.0m (LIDAR) 

Bwlch Grid Reference:  SN 28481 23410 & SN 28481 23413 (LIDAR) 

Drop:  29.97m (LIDAR) 

 

Myrddyn Phillips (July 2022)

 

 

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Castell Dinefwr (SN 611 217) - 98th significant name change

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales, with the summit height, bwlch height and their locations, the drop, dominance and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Castell Dinefwr (SN 611 217)

The criteria for the two listings that this name change applies to are:

100m Twmpau – Welsh hills at or above 100m and below 200m in height that have 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau, with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

Y Trechol – The Dominant Hills of Wales – Welsh P30 hills whose prominence equal or exceed half that of their absolute height.  With the criteria for Lesser Dominant status being those additional Welsh P30 hills whose prominence is between one third and half that of their absolute height.  The list is authored by Myrddyn Phillips with the Introduction to the start of the Mapping Mountains publication of this list appearing on the 3^rd December 2015, and the list is now available in its entirety on Mapping Mountains in Google Doc format. 

Y Trechol - The Dominant Hills of Wales by Myrddyn Phillips

The hill is adjoined to the Mynydd Mallaen group of hills, which are situated in the central part of South Wales (Region B, Sub-Region B1), and it is positioned with the A40 road to its north, the Afon Tywi to its south and the A483 road to its east, and has the town of Llandeilo towards the east north-east.

Extract from the Ordnance Survey 1:25,000 Explorer map

The hill appeared in the original Welsh 100m P30 list on Geoff Crowder’s v-g.me website, under the name of Dynevor Castle, with an accompanying note stating; Name from ancient castle at the summit.

Dynevor Castle

100m

SN612217

159

186

Name from ancient castle at the summit

 

The intricacies of language and prioritising one in favour of another for listing a hill is fraught with complication, with originating Cymraeg names being anglicised and also originating English names being cymricised, examples such as these are more common in border country and especially so for anglicised forms.  There is no steadfast rule that fits all, but as a standard a name that has its origins in the Welsh language should be prioritised in favour of a contemporary anglicised or English version of the name, and ideally for this to be substantiated by either historic documentation and/or contemporary usage.  Likewise, if a name exists where an element of it is in English and if this name applies to a hill that is situated in a Welsh speaking part of Wales it is standard practice to use a full Welsh term for the name.  It is also standard practice to use a Welsh name for a hill if another name exists that has originated in a different language.

Therefore, the name this hill is now listed by in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales is Castell Dinefwr, and this name is used as it is the Welsh name for the castle which is positioned on the summit of this hill. 

The full details for the hill are:

Group:  Mynydd Mallaen

Name:  Castell Dinefwr

Previously Listed Name:  Dynevor Castle   

OS 1:50,000 map:  159

Summit Height:  101.1m (LIDAR) 

Summit Grid Reference:  SN 61167 21730 (LIDAR) 

Bwlch Height:  49.0m (LIDAR) 

Bwlch Grid Reference:  SN 61568 21996 (LIDAR) 

Drop:  52.1m (LIDAR) 

Dominance:  51.54% (LIDAR) 

 

Myrddyn Phillips (April 2022) 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Bron y Gaer (SN 699 326) - 97th significant name change

Hill Reclassifications post for Bron y Gaer 

Summit Relocations post for Bron y Gaer

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Bron y Gaer (SN 699 326)

The criteria for the list that this name change applies to are:

100m Twmpau – Welsh hills at or above 100m and below 200m in height that have 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau, with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Mynydd Mallaen group of hills, which are situated in the central part of South Wales (Region B, Sub-Region B1), and it is positioned with minor roads to its west and south, the A40 road farther to its south and the A482 road to its east, and has the town of Llanymddyfri (Llandovery) towards the east north-east. 

The hill appeared in the original 100m Welsh P30 list on Geoff Crowder’s v-g.me website, under the transposed name of Cefn, with an accompanying note stating; Name from farm to the South.

Cefn

198m

SN697328

146/160

12/187

Name from farm to the South

 

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a farm and use it for that of the hill.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number B275 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as a part of Bron y Gaer farm in the apportionments, with the details on the Tithe map appearing in the parish of Llansadwrn and in the county named as Carmarthenshire. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Bron y Gaer and this was derived from the Tithe map. 

 

The full details for the hill are: 

Group:  Mynydd Mallaen 

Name:  Bron y Gaer

Previously Listed Name:  Cefn 

OS 1:50,000 map:  146, 160

Summit Height:  199.7m (LIDAR) 

Summit Grid Reference:  SN 69948 32662 & SN 69950 32662 (LIDAR) 

Bwlch Height:  166.5m (LIDAR) 

Bwlch Grid Reference:  SN 69362 32822 (LIDAR) 

Drop:  33.2m (LIDAR) 

 

Myrddyn Phillips (April 2022)

Mapping Mountains - Significant Name Changes - 100m Twmpau

Bryn Myga (SN 625 803) - 96th significant name change

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales, with the summit height, bwlch height and their locations, the drop, dominance and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Bryn Myga (SN 625 803)

The criteria for the two listings that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

Y Trechol – The Dominant Hills of Wales – Welsh P30 hills whose prominence equal or exceed half that of their absolute height.  With the criteria for Lesser Dominant status being those additional Welsh P30 hills whose prominence is between one third and half that of their absolute height.  The list is authored by Myrddyn Phillips with the Introduction to the start of the Mapping Mountains publication of this list appearing on the 3^rd December 2015, and which is now available in its entirety on Mapping Mountains in Google Doc format. 

Y Trechol - The Dominant Hills of Wales by Myrddyn Phillips

The hill is adjoined to the Pen y Garn group of hills, which are situated in the north-western part of South Wales (Region B, Sub-Region B1), and it is positioned with minor roads to its north and south, the A44 road farther to its north and the A4120 road farther to its south, and has the town of Aberystwyth towards the west north-west. 

The hill appeared in the original 100m Welsh P30list on Geoff Crowder’s v-g.me website, under the invented and transposed name of Pen y Coed Cwm-lletty, with an accompanying note stating; Name from wood to the North-East.

Pen y Coed Cwm-lletty

137m

SN625803

135

213

Name from wood to the North-East

 

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a wood and add the words Pen y to it.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 722 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Bryn Myga in the apportionments, with the details on the Tithe map appearing in the parish of Llanbadarn Fawr and in the county named as Cardigan. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Bryn Myga and this was derived from the Tithe map. 

 

The full details for the hill are: 

Group:  Pen y Garn 

Name:  Bryn Myga

Previously Listed Name:  Pen y Coed Cwm-lletty 

OS 1:50,000 map:  135

Summit Height:  137.9m (LIDAR) 

Summit Grid Reference:  SN 62508 80300 (LIDAR) 

Bwlch Height:  91.6m (LIDAR) 

Bwlch Grid Reference:  SN 62722 79867 (LIDAR) 

Drop:  45.8m (LIDAR) 

Dominance:  33.36% (LIDAR) 

 

Myrddyn Phillips (February 2022)

  

Mapping Mountains - Significant Name Changes - 100m Twmpau

Pant Gwyn (SN 615 793) - 95th significant name change

Hill Reclassifications post for Pant Gwyn

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Pant Gwyn (SN 615 793)

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Pen y Garn group of hills, which are situated in the north-western part of South Wales (Region B, Sub-Region B1), and it is positioned with the A4120 road to its north and the B4340 road to its south, and has the town of Aberystwyth towards the north-west. 

The hill appeared in the original 100m Welsh P30list on Geoff Crowder’s v-g.me website, under the transposed name of Pencwarel, with an accompanying note stating; Name from buildings to the South-West.

Pencwarel

158m

SN616793

135

213

Name from buildings to the South-West.

 

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a farm and use it for that of the hill.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 606 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Pant Gwyn in the apportionments, with the details on the Tithe map appearing in the parish of Llanbadarn Fawr and in the county named as Cardigan. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Pant Gwyn and this was derived from the Tithe map. 

 

The full details for the hill are: 

Group:  Pen y Garn 

Name:  Pant Gwyn

Previously Listed Name:  Pencwarel 

OS 1:50,000 map:  135

Summit Height:  158.1m (LIDAR) 

Summit Grid Reference:  SN 61596 79302 (LIDAR) 

Bwlch Height:  123.6m (LIDAR) 

Bwlch Grid Reference:  SN 61317 79267 (LIDAR) 

Drop:  34.5m (LIDAR) 

 

Myrddyn Phillips (January 2022)

Mapping Mountains - Significant Name Changes - 100m Twmpau

Bryn y Gaer (SJ 313 574) - 94th significant name change

Survey post for Bryn y Gaer

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales, with the summit height, bwlch height and their locations, the drop, dominance and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

The summit of Bryn y Gaer (SJ 313 574)

The criteria for the two listings that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

Y Trechol – The Dominant Hills of Wales – Welsh P30 hills whose prominence equal or exceed half that of their absolute height.  With the criteria for Lesser Dominant status being those additional Welsh P30 hills whose prominence is between one third and half that of their absolute height.  The list is authored by Myrddyn Phillips with the Introduction to the start of the Mapping Mountains publication of this list appearing on the 3^rd December 2015, and which is now available in its entirety on Mapping Mountains in Google Doc format. 

Y Trechol - The Dominant Hills of Wales by Myrddyn Phillips

The hill is adjoined to the Bryniau Clwyd group of hills which are situated in the north-eastern part of North Wales (Region A, Sub-Region A2), and it is positioned with the A550 road to its west, a minor road to its south and the B5373 road to its north-east, and has the village of Yr Hôb (Hope) towards the north-west. 

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website, this hill was listed under the name of Caer Estyn, which is a prominent name that appears close to the summit of this hill on the contemporary Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map, and is the name given the remains of an ancient hill fort that is positioned on this hill. 

Extract from the Ordnance Survey 1:25,000 Explorer map

Since publication of these P30 lists on Geoff Crowder’s v-g.me website there have been a number of Ordnance Survey maps made available online, some of these are historic such as the series of Six-Inch maps on the National Library of Scotland website, whilst others are current and digitally updated such as the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map, and the interactive mapping on the Magic Maps and WalkLakes websites, and it is the Ordnance Survey series of Six-Inch maps that name this hill Bryn y Gaer. 

Extract from the Ordnance Survey series of Six-Inch maps

After parking my car and getting my boots on and just before setting out for this hill I commented to a woman, who appeared close to my car and who was taking her daughter out, what a beautiful morning it was, I asked if she was local and then asked about the name of the hill, she replied it’s known as Bryn y Gaer.  After visiting the hill and arriving back at my car I met a man walking his dog, he was also local and we chatted about the hill and I asked him about its name, he also replied that it is known as Bryn y Gaer. 

Therefore, the name this hill is now listed by in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales is Bryn y Gaer, and this was derived from the Ordnance Survey series of Six-Inch maps and substantiated by local enquiry.  As Bryn y Gaer is the name of the hill, this is prioritised in favour of the name of an ancient hill fort. 

 

The full details for the hill are: 

Group:  Bryniau Clwyd 

Name:  Bryn y Gaer

Previously Listed Name:  Caer Estyn 

OS 1:50,000 map:  117

Summit Height:  153.9m (LIDAR) 

Summit Grid Reference:  SJ 31381 57459 (LIDAR) 

Bwlch Height:  95.8m (LIDAR) 

Bwlch Grid Reference:  SJ 31774 58223 (LIDAR) 

Drop:  58.1m (LIDAR) 

Dominance:  37.74% (LIDAR) 

 

Myrddyn Phillips (December 2021)

 

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Trehafren Hill (SO 100 910) - 93rd significant name change

Survey post for Trehafren Hill

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips. 

The summit of Trehafren Hill (SO 100 910)

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Cilfaesty group of hills, which are situated in Mid and West Wales (Region B, Sub-Region B1), and it is positioned with a minor road to its immediate north, the Afon Hafren (River Severn) and the B4568 road farther to its north and the A4811 road to its south, and has the town of Y Drenewydd (Newtown) surrounding it. 

The hill appeared in the original 100m Welsh P30 list on Geoff Crowder’s v-g.me website under the invented and transposed name of Moel Trehafren, with an accompanying note stating; Name from surrounding estate.

Moel Trehafren

152m

SO100911

136

214/215

Name from surrounding estate

 

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a housing estate and prefix it with the word Moel.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

Extract from the Ordnance Survey 1:25,000 Explorer map

For the name of this hill I sought advice from a hill walking friend; Edward Humphreys, who is the Town Clerk of Newtown and Llanllwchaiarn.  He told me that Newtown and Llanllwchaiarn Town Council now have the tenancy of the land under a 99 year lease community asset transfer incorporating this hill, with the tenancy having been transferred from that of Powys County Council.  Ed also told me that the hill is known locally as Trehafren Hill.

Edward Humphreys

Since publication of these P30 lists on Geoff Crowder’s v-g.me website, research in to appropriate names of hills has been made easier by the availability of the Internet.  An online search brings up a number of references to the name of Trehafren Hill, including its own Facebook page!  Many of these are centred on the Mountain Bike Trail and BMX Pump Track that are now situated on this hill. 

Therefore, the name this hill is now listed by in the 100m Twmpau is Trehafren Hill and this was derived from local enquiry. 

 

The full details for the hill are: 

Group:  Cilfaesty 

Name:  Trehafren Hill

Previously Listed Name:  Moel Trehafren 

OS 1:50,000 map:  136

Summit Height:  152.8m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SO 10020 91073 (Trimble GeoXH 6000)

Bwlch Height:  115.4m (LIDAR)

Bwlch Grid Reference:  SO 10146 90923 (LIDAR)

Drop:  37.4m (Trimble GeoXH 6000 summit and LIDAR bwlch) 

 

Myrddyn Phillips (October 2021)

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Quarry Field (SJ 183 147) - 92nd significant name change

Survey post for Quarry Field

Hill Reclassifications post for Quarry Field

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips. 

Quarry Field (SJ 183 147)

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Carnedd Wen group of hills which are situated in the south-eastern part of North Wales (Region A, Sub-Region A4), and it is positioned with the Afon Efyrnwy (River Vyrnwy) and the A495 road to its north-west, the A490 road to its east and minor roads to its north and south, and has the village of Meifod towards the west south-west. 

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category. 

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-assessed and it was listed under the point (Pt. 109m) notation with an estimated c 22m of drop, based on the 109m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 87m bwlch height, based on interpolation of 10m contouring between 80m – 90m. 

Extract from the Ordnance Survey 1:25,000 Explorer map

This hill was the fourth of five hills visited during the day, all of which formed separate walks.  When descending from its summit I was fortunate to meet the local farmer; Richard Morris of Cil Farm.  During our conversation Richard explained that he grew up in this community and farmed all his adult life, but only took over the land that comprises this hill three years ago.  He told me that it has no individual name but the upper field where the summit is situated is known as Quarry Field. 

Richard Morris

Therefore, the name this hill is now listed by in the 100m Twmpau is Quarry Field and this was derived from local enquiry. 

 

The full details for the hill are: 

Group:  Carnedd Wen 

Name:  Quarry Field

Previously Listed Name:  Pt. 109m 

OS 1:50,000 map:  125

Summit Height:  109.5m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SJ 18332 14741 (Trimble GeoXH 6000)

Bwlch Height:  86.6m (LIDAR)

Bwlch Grid Reference:  SJ 18549 14551 (LIDAR)

Drop:  22.9m (Trimble GeoXH 6000 summit and LIDAR bwlch) 

 

Myrddyn Phillips (September 2021)

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Dôl Gron (SJ 171 137) - 91st significant name change

Survey post for Dôl Gron

  

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales, with the summit height, bwlch height and their locations, the drop, dominance and status of the hill derived from LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips. 

Dôl Gron (SJ 171 137)

The criteria for the two listings that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

Y Trechol – The Dominant Hills of Wales – Welsh P30 hills whose prominence equal or exceed half that of their absolute height.  With the criteria for Lesser Dominant status being those additional Welsh P30 hills whose prominence is between one third and half that of their absolute height.  The list is authored by Myrddyn Phillips with the Introduction to the start of the Mapping Mountains publication of this list appearing on the 3^rd December 2015, and which is now available in its entirety on Mapping Mountains in Google Doc format. 

Y Trechol - The Dominant Hills of Wales by Myrddyn Phillips

The hill is adjoined to the Carnedd Wen group of hills which are situated in the south-eastern part of North Wales (Region A, Sub-Region A4), and it is positioned with the Afon Efyrnwy (River Vyrnwy) and the A495 road to its north-west and minor roads to its south and east, and has the village of Meifod towards the west south-west. 

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was listed under the invented and transposed name of Bryn y Clolyn, with an accompanying note stating; Name from buildings to the South-East.

 

Bryn y Clolyn

160c

SJ172137

125

239

Name from buildings to the South-East.

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a house and prefix it with the words Bryn y.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

Extract from the Ordnance Survey 1:25,000 Explorer map

This hill was the third of five hills visited during the day, all of which formed separate walks.  When visiting the fourth hill; Quarry Field (SJ 183 147) I was fortunate to meet the local farmer; Richard Morris of Cil Farm.  During our conversation Richard explained that he grew up in this community and farmed all his adult life, but only took over this field three years ago.  I mentioned the previous hill I had been up and he told me it also forms a part of the land that he farms, and like Quarry Field, he also took over this hill three years ago.  He told me the name of the hill I had previously visited is Dôl Gron. 

Richard Morris

When back home I checked the Ordnance Survey series of Six-Inch maps and there under the hill positioned at SJ 171 137 is an old house named Ddol-gron, with the near wood also named as Coed Ddol-gron.  Dôl Gron is translated in to English as the Round or Rounded Meadow, an apt description of the hill and especially so for its upper section. 

Therefore, the name this hill is now listed by in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales is Dôl Gron and this was derived from local enquiry. 

 

The full details for the hill are: 

Group:  Carnedd Wen 

Name:  Dôl Gron

Previously Listed Name:  Bryn y Clolyn 

OS 1:50,000 map:  125

Summit Height:  165.8m (converted to OSGM15, Trimble GeoXH 6000) 

Summit Grid Reference:  SJ 17143 13703 (Trimble GeoXH 6000) 

Bwlch Height:  109.7m (LIDAR) 

Bwlch Grid Reference:  SJ 17539 13499 (LIDAR) 

Drop:  56.2m (Trimble GeoXH 6000 summit and LIDAR bwlch) 

Dominance:  33.87% (Trimble GeoXH 6000 summit and LIDAR bwlch) 

 

Myrddyn Phillips (September 2021)

 

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Cefn Cyfronydd (SJ 144 082) - 90th significant name change

Survey post for Cefn Cyfronydd

Hill Reclassifications post for Cefn Cyfronydd

Summit Relocations post for Cefn Cyfronydd

 

There has been a Significant Name Change to a hill that is now listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips. 

Cefn Cyfronydd (SJ 144 082) on the left of photo

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Carnedd Wen group of hills which are situated in the south-eastern part of North Wales (Region A, Sub-Region A4), and it is positioned with a minor road to its north, the B4389 road to its north-west, the A458 road to its south-west and the B4392 road to its east, and has the small town of Llanfair Caereinion towards the west south-west. 

When the original 200m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was listed under the invented and transposed name of Pen-Cefn-cyfronydd, with an accompanying note stating; Name from buildings to the North and West.

Pen-Cefn-cyfronydd

200c

SJ146084

125

215/239

Name from buildings to the North and West.

 

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

Extract from the Ordnance Survey 1:25,000 Explorer map

I first visited this hill in October 2011, on that occasion I asked a local farmer if I could visit the summit and if so, where would be best to park.  He directed me up an access track to a house that is positioned just below the summit.  During our conversation I asked about the name of the hill, he told me that it is known as Cefn Cyfronydd, which is also the name of one of the houses beside the access track. 

Colin Owen of Garth Vaughan farm

During a subsequent visit to this hill in March 2021 I called at Garth Vaughan farm where I met Colin Owen.  He was in a large barn looking after newly born lambs and we chatted for a number of minutes, I asked if I could use the track which shot straight up toward the higher part of the hill from the side of the barn and a few minutes later I was steadily plodding uphill.  After surveying the summit I descended back to Garth Vaughan and called over to Colin, he invited me in to the barn to see the newly born lambs with one mother giving birth to four lambs earlier in the morning.  During our conversation I asked about the name of the hill and he confirmed that he had heard it being called Cefn Cyfronydd. 

Therefore, the name this hill is now listed by in the 100m Twmpau is Cefn Cyfronydd, and this was derived from local enquiry. 

 

The full details for the hill are: 

Group:  Carnedd Wen 

Name:  Cefn Cyfronydd

Previously Listed Name:  Pen-Cefn-cyfronydd 

OS 1:50,000 map:  125

Summit Height:  199.1m (converted to OSGM15, Trimble GeoXH 6000)                                                           

Summit Grid Reference:  SJ 14459 08297 (Trimble GeoXH 6000) 

Bwlch Height:  150.6m (LIDAR) 

Bwlch Grid Reference:  SJ 14997 08587 (LIDAR) 

Drop:  48.5m (Trimble GeoXH 6000 summit and LIDAR bwlch) 

 

Myrddyn Phillips (July 2021)

 

 

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Bryn y Fedwen (SJ 115 125) - 89th significant name change

Survey post for Bryn y Fedwen

Hill Reclassifications post for Bryn y Fedwen

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips. 

LIDAR image of Bryn y Fedwen (SJ 115 125)

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Y Berwyn group of hills, which are situated in the south-eastern part of North Wales (Region A, Sub-Region A4), and it is positioned with minor roads to its north-east, north-west and south and the A495 road to its east, and has the village of Meifod towards the east north-east. 

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category. 

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-evaluated and it was listed under the point (Pt. 157m) notation with an estimated c 20m of drop, based on the 157m summit spot height and an estimated c 137m bwlch height, with the latter based on interpolation of 10m contouring between 130m – 140m that appear on the Ordnance Survey 1:25,000 Explorer map. 

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number C231 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Bryn y Fedwen in the apportionments, with the details on the Tithe map appearing in the parish of Meifod and in the county named as Montgomery. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Bryn y Fedwen and this was derived from the Tithe map. 

 

The full details for the hill are: 

Group:  Y Berwyn 

Name:  Bryn y Fedwen

Previously Listed Name:  Pt. 157m 

OS 1:50,000 map:  125

Summit Height:  156.8m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SJ 11582 12548 (Trimble GeoXH 6000)

Bwlch Height:  134.9m (LIDAR)

Bwlch Grid Reference:  SJ 11523 12758 (LIDAR)

Drop:  21.8m (Trimble GeoXH 6000 summit and LIDAR bwlch) 

 

Myrddyn Phillips (July 2021)

 

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Lower Cil (SJ 185 016) - 88th significant name change

Survey post for Lower Cil

Hill Reclassifications post for Lower Cil

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips. 

LIDAR image of Lower Cil (SJ 185 016)

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Carnedd Wen group of hills which are situated in the south-eastern part of North Wales (Region A, Sub-Region A4), and it is positioned with the B4385 road to its west, a minor road to its south and the A483 road to its east, and has the village of Aberriw (Berriew) towards the south-south-east. 

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category. 

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-assessed and it was listed under the point (Pt. 158m) notation with an estimated c 21m of drop, based on the 158m summit spot height that appears on the Ordnance Survey 1:25,000 Explorer map and an estimated c 137m bwlch height based on interpolation of 5m contouring between 135m – 140m. 

Extract from the Ordnance Survey 1:25,000 Explorer map

This was one of two hills visited on a walk with Linda during the Covid-19 keep local restrictions and after surveying its summit we descended to Lower Cil Farm (SJ 182 015) which is situated just to the west of the summit.  Approaching the farmyard we met George Pritchard who was working in one of the barns.  I introduced myself and explained my interest in upland place-names and in particular the name of the hill that we had just visited and which was just above George’s farm.  He explained that the hill does not have an individual name but the land where the summit is situated is known as Lower Cil, after the farm.  We chatted with George for ten minutes or so and he then kindly directed us on the continuation of our walk through the farmyard and across one of his fields to a crossing place over a stream. 

Therefore, the name this hill is now listed by in the 100m Twmpau is Lower Cil, and this was derived from local enquiry. 

 

The full details for the hill are: 

Group:  Carnedd Wen 

Name:  Lower Cil

Previously Listed Name:  Pt. 158m 

OS 1:50,000 map:  136

Summit Height:  159.3m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SJ 18556 01630 (Trimble GeoXH 6000)

Bwlch Height:  137.8m (LIDAR)

Bwlch Grid Reference:  SJ 18939 01777 (LIDAR)

Drop:  21.5m (Trimble GeoXH 6000 summit and LIDAR bwlch) 

 

Myrddyn Phillips (July 2021)

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Pt. 170.7m (SJ 193 018) - 87th significant name change

Survey post for Pt. 170.7m

Significant Height Revisions post for Pt. 170.7m

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips. 

Pt. 170.7m (SJ 193 018)

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Carnedd Wen group of hills which are situated in the south-eastern part of North Wales (Region A, Sub-Region A4), and it is positioned with a minor road to its north, the B4385 road to its west, the B4390 road to its south and the A483 road to its east, and has the village of Aberriw (Berriew) towards the south-west. 

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was listed under the transposed name of Allt Upper, which is a prominent name that appears near the summit of this hill on the contemporary Ordnance Survey 1:25,000 Explorer map.

Allt Upper

169m

SJ193018

136

216

Included by contour configuration

 

During my early hill listing I paid little regard to name placement on the map, or the meaning of names and to what feature the name was appropriately applied to.  Therefore, I prioritised names for listing purposes that I now understand are either inappropriate or where another name is viewed as being more appropriate, with the previously listed name of Allt Upper applying to a district and not necessarily to the hill itself. 

Extract from the Ordnance Survey 1:25,000 Explorer map

This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.  However, occasionally even when research is conducted an appropriate name for the hill may not be found, and on such occasions the listing protocol is to use the point (Pt. 170.7m) notation, and for this hill, this is such an example. 

Therefore, the name this hill is now listed by in the 100m Twmpau is Pt. 170.7m, and this is being used as the author has not found an appropriate name for it either through historic research and / or local enquiry. 

 

The full details for the hill are: 

Group:  Carnedd Wen 

Name:  Pt. 170.7m

Previously Listed Name:  Allt Upper 

OS 1:50,000 map:  136

Summit Height:  170.7m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SJ 19323 01898 (Trimble GeoXH 6000)

Bwlch Height:  132.5m (LIDAR)

Bwlch Grid Reference:  SJ 18115 01656 (LIDAR)

Drop:  38.2m (Trimble GeoXH 6000 summit and LIDAR bwlch)

 

Myrddyn Phillips (June 2021)

 

 

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Cae Gwastad (SN 646 867 & SN 646 868) - 86th significant name change

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Cae Gwastad (SN 646 867 & SN 646 868)

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Pumlumon group of hills, which are situated in the north-western part of Mid and West Wales (Region B, Sub-Region B2), and it is positioned with the A487 road to its west and minor roads to its south and east, and has the village of Tal-y-bont towards the north north-east. 

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was listed under the invented and transposed name of Mynydd Cwm-cae, with an accompanying note stating; Name from buildings and wood to the South.

Mynydd Cwm-cae

147m

SN646868

135

213

Name from buildings and wood to the South

 

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a near farm and wood and prefix it with the word Mynydd.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number E798 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Cae Gwastad in the apportionments, with the details on the Tithe map appearing in the parish of Llanfihangel Genau’r Glyn and in the county named as Cardigan. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Cae Gwastad and this was derived from the Tithe map. 

 

The full details for the hill are: 

Group:  Pumlumon 

Name:  Cae Gwastad

Previously Listed Name:  Mynydd Cwm-cae 

OS 1:50,000 map:  135

Summit Height:  147.3m (LIDAR) 

Summit Grid Reference:  SN 64617 86799 & SN 64622 86800 (LIDAR) 

Bwlch Height:  119.25m (LIDAR) 

Bwlch Grid Reference:  SN 64935 87281 (LIDAR) 

Drop:  28.0m (LIDAR) 

 

Myrddyn Phillips (June 2021)

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Penlan (SN 595 863) - 85th significant name change

Summit Relocations post for Penlan

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales, with the summit height, bwlch height and their locations, the drop, dominance and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Penlan (SN 595 863)

The criteria for the two listings that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

Y Trechol – The Dominant Hills of Wales – Welsh P30 hills whose prominence equal or exceed half that of their absolute height.  With the criteria for Lesser Dominant status being those additional Welsh P30 hills whose prominence is between one third and half that of their absolute height.  The list is authored by Myrddyn Phillips with the Introduction to the start of the Mapping Mountains publication of this list appearing on the 3^rd December 2015, and which is now available in its entirety on Mapping Mountains in Google Doc format. 

Y Trechol - The Dominant Hills of Wales by Myrddyn Phillips

The hill is adjoined to the Pumlumon group of hills, which are situated in the north-western part of Mid and West Wales (Region B, Sub-Region B2), and it is positioned with the coast to its west, a minor road to its south and the B4572 road to its east, and has the village of Llangorwen towards the south. 

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was listed under the transposed name of Moelcerni, with an accompanying note stating; Name from buildings to the North-East.

Moelcerni

137m

SN595863

135

213

Name from buildings to the North-East

 

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a near farm and use it for that of the hill.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number E231 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Penlan in the apportionments, with the details on the Tithe map appearing in the parish of Llanbadarn Fawr and in the county named as Cardigan. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales is Penlan and this was derived from the Tithe map. 

 

The full details for the hill are: 

Group:  Pumlumon 

Name:  Penlan

Previously Listed Name:  Moelcerni 

OS 1:50,000 map:  135

Summit Height:  137.4m (LIDAR) 

Summit Grid Reference:  SN 59521 86313 (LIDAR) 

Bwlch Height:  83.8m (LIDAR) 

Bwlch Grid Reference:  SN 59661 86697 (LIDAR) 

Drop:  53.6m (LIDAR) 

Dominance:  39.01% (LIDAR) 

 

Myrddyn Phillips (May 2021)

 

 

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Banc Rhos Cellan (SN 592 850) - 84th significant name change

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales, with the summit height, bwlch height and their locations, the drop, dominance and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Banc Rhos Cellan (SN 592 850)

The criteria for the two listings that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

Y Trechol – The Dominant Hills of Wales – Welsh P30 hills whose prominence equal or exceed half that of their absolute height.  With the criteria for Lesser Dominant status being those additional Welsh P30 hills whose prominence is between one third and half that of their absolute height.  The list is authored by Myrddyn Phillips with the Introduction to the start of the Mapping Mountains publication of this list appearing on the 3^rd December 2015, and which is now available in its entirety on Mapping Mountains in Google Doc format. 

Y Trechol - The Dominant Hills of Wales by Myrddyn Phillips

The hill is adjoined to the Pumlumon group of hills, which are situated in the north-western part of Mid and West Wales (Region B, Sub-Region B2), and it is positioned with the coast to its west, a minor road to its south and the B4572 road to its east, and has the village of Llangorwen towards the south-east. 

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was listed under the invented and transposed name of Mynydd Rosgellan-fach, with an accompanying note stating; Name from buildings to the North-East.

Mynydd Rhosgellan-fach

131m

SN593851

135

213

Name from buildings to the North-East

 

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a near farm and prefix it with the word Mynydd.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number E245 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Banc Rhos Cellan in the apportionments, with the details on the Tithe map appearing in the parish of Llanbadarn Fawr and in the county named as Cardigan. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales is Banc Rhos Cellan and this was derived from the Tithe map. 

 

The full details for the hill are: 

Group:  Pumlumon 

Name:  Banc Rhos Cellan

Previously Listed Name:  Mynydd Rhosgellan-fach 

OS 1:50,000 map:  135

Summit Height:  131.5m (LIDAR) 

Summit Grid Reference:  SN 59298 85073 (LIDAR) 

Bwlch Height:  58.8m (LIDAR) 

Bwlch Grid Reference:  SN 59744 85128 (LIDAR) 

Drop:  72.7m (LIDAR) 

Dominance:  55.32% (LIDAR) 

 

Myrddyn Phillips (May 2021)

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Plas Newydd (SH 614 807) - 83rd significant name change

Hill Reclassifications post for Plas Newydd

 

There has been a Significant Name Change to a hill that is now listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived from detail on contemporary maps produced from Ordnance Survey data and LIDAR analysis conducted by Myrddyn Phillips. 

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Ynys Môn group of hills, which are situated in the north-western part of North Wales (Region A, Sub-Region A1), and it is positioned with the coast to its north and a minor road to its south, and has the small community of Glan-yr-afon towards the west. 

When the original 30-99m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category. 

Extract from the Ordnance Survey 1:25,000 Explorer map

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-assessed and it was listed under the point (Pt. 99m) notation with 27m of drop based on the 99m summit spot height and the 72m bwlch spot height that appear on the Ordnance Survey 1:25,000 Explorer map.  Therefore, the hill was an addition to the 30-99m Sub-Twmpau list.  With the summit height subsequently amended to 100m due to the spot height that appears on the interactive mapping on the WalkLakes website. 

Extract from the Tithe map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the apportionments

The enclosed land where the summit of this hill is situated is given the number 48 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Plas Newydd in the apportionments, with the details on the Tithe map appearing in the parish of Llangoed and in the county named as Anglesey. 

Therefore, the name this hill is now listed by in the 100m Twmpau is Plas Newydd, and this was derived from the Tithe map. 

 

The full details for the hill are: 

Group:  Ynys Môn 

Name:  Plas Newydd

Previously Listed Name:  Pt. 99m 

OS 1:50,000 map:  114, 115

Summit Height:  100m (spot height) 

Summit Grid Reference:  SH 61430 80710 (spot height) 

Bwlch Height:  71.7m (LIDAR) 

Bwlch Grid Reference:  SH 60600 81404 (LIDAR) 

Drop:  28m (spot height summit and LIDAR bwlch) 

 

Myrddyn Phillips (May 2021)

Mapping Mountains - Significant Name Changes - 100m Twmpau

Banc Uchaf (SN 617 743) - 82nd significant name change

Survey post for Banc Uchaf

Summit Relocations post for Banc Uchaf

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived from LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips. 

Banc Uchaf (SN 617 743)

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Elenydd group of hills which are situated in the western part of Mid and West Wales (Region B, Sub-Region B2), and it is positioned with the A485 road to its north and minor roads to its west, south and east, and has the village of Llanilar towards the north north-east. 

The hill originally appeared in the 100m P30 liston Geoff Crowder’s v-g.me website under the invented and transposed name of Bryn Cwm Moch, with an accompanying note stating; Name from cwm to the North-West.

Bryn Cwm Moch

197m

SN617742

135

213

Name from cwm to the North-West

 

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a near cwm and prefix it with the word Bryn.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

Extract from the Ordnance Survey 1:25,000 Explorer map

As this hill comprises bounded land the Tithe map was consulted.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 76 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Banc Uchaf in the apportionments, with the details on the Tithe map appearing in the parish of Llanilar and in the county named as Cardigan. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Banc Uchaf and this was derived from the Tithe map.

 

The full details for the hill are: 

Group:  Elenydd 

Name:  Banc Uchaf

Previously Listed Name:  Bryn Cwm Moch 

OS 1:50,000 map:  135

Summit Height:  197.6m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SN 61768 74325 (Trimble GeoXH 6000)

Bwlch Height:  148.5m (LIDAR)

Bwlch Grid Reference:  SN 61371 72717 (LIDAR) 

Drop:  49.1m (Trimble GeoXH 6000 summit and LIDAR bwlch)

 

Myrddyn Phillips (May 2021)

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Banc Tan y Cwarel (SN 583 747) - 81st significant name change

Survey post for Banc Tan y Cwarel

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived from LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips. 

LIDAR image of Banc Tan y Cwarel (SN 583 747)

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Elenydd group of hills which are situated in the western part of Mid and West Wales (Region B, Sub-Region B2), and it is positioned with the A487 road to its north-west and minor roads to its south-west and east, and has the village of Llanfarian towards the north. 

The hill originally appeared in the 100m P30 list on Geoff Crowder’s v-g.me website under the invented and transposed name of Pen y Tancwarel, with an accompanying note stating; Name from buildings to the South.

Pen y Tancwarel

182m

SN583748

135

213

Name from buildings to the South

 

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a near farm and prefix it with the words Pen y.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

Extract from the Ordnance Survey 1:25,000 Explorer map

As this hill comprises bounded land the Tithe map was consulted.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 554 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Banc Tan y Cwarel in the apportionments, with the details on the Tithe map appearing in the parish of Llanychaearn and in the county named as Cardigan. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Banc Tan y Cwarel, and this was derived from the Tithe map. 

 

The full details for the hill are: 

Group:  Elenydd 

Name:  Banc Tan y Cwarel

Previously Listed Name:  Pen y Tancwarel 

OS 1:50,000 map:  135

Summit Height:  182.9m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SN 58349 74798 (Trimble GeoXH 6000)

Bwlch Height:  142.3m (LIDAR)

Bwlch Grid Reference:  SN 57897 75028 (LIDAR) 

Drop:  40.55m (Trimble GeoXH 6000 summit and LIDAR bwlch)

 

Myrddyn Phillips (May 2021)

Mapping Mountains - Significant Name Changes - 100m Twmpau

Pen y Brigni (SN 632 888) - 80th significant name change

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales, with the summit height, bwlch height and their locations, the drop, dominance and status of the hill derived from LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Pen y Brigni (SN 632 888)

The criteria for the two listings that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

Y Trechol – The Dominant Hills of Wales – Welsh P30 hills whose prominence equal or exceed half that of their absolute height.  With the criteria for Lesser Dominant status being those additional Welsh P30 hills whose prominence is between one third and half that of their absolute height.  The list is authored by Myrddyn Phillips with the Introduction to the start of the Mapping Mountains publication of this list appearing on the 3^rd December 2015, and which is now available in its entirety on Mapping Mountains in Google Doc format. 

Y Trechol - The Dominant Hills of Wales by Myrddyn Phillips

The hill is adjoined to the Pumlumon group of hills, which are situated in the north-western part of Mid and West Wales (Region B, Sub-Region B2), and it is encircled by minor roads with farther afield the B4353 road to its south-west and the A487 road to its south-east, and has the village of Y Borth towards the west. 

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was listed under the transposed name of Bryn-yr-eithin, with an accompanying note stating; Name from buildings to the West.

Bryn-yr-eithin

134m

SN633889

135

213

Name from buildings to the West

 

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a near farm and use it for that of the hill.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number B241 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Pen y Brigni in the apportionments, with the details on the Tithe map appearing in the parish of Llanfihangel Genau’r Glyn and in the county named as Cardigan. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales is Pen y Brigni and this was derived from the Tithe map. 

 

The full details for the hill are: 

Group:  Pumlumon 

Name:  Pen y Brigni

Previously Listed Name:  Bryn-yr-eithin 

OS 1:50,000 map:  135

Summit Height:  133.5m (LIDAR) 

Summit Grid Reference:  SN 63271 88874 (LIDAR) 

Bwlch Height:  87.3m (LIDAR) 

Bwlch Grid Reference:  SN 64197 89109 (LIDAR) 

Drop:  46.2m (LIDAR) 

Dominance:  34.61% (LIDAR) 

 

Myrddyn Phillips (May 2021)

Mapping Mountains - Significant Name Changes - 100m Twmpau

Banc (SN 568 757) - 79th significant name change

Survey post for Banc

Significant Height Revisions post for Banc

Summit Relocations post for Banc

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips. 

Banc (SN 568 757)

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Elenydd group of hills which are situated in the western part of Mid and West Wales (Region B, Sub-Region B2), and it has the coast to its west and the A487 road to its east, and has the village of Llanfarian towards the north-east. 

Extract from the Ordnance Survey 1:25,000 Explorer map

The hill originally appeared in the 100m P30 list on Geoff Crowder’s v-g.me website under the transposed name of Esgair-hir, which is a prominent name that appears near the summit of this hill on the contemporary Ordnance Survey 1:25,000 Explorer map.

Esgair-hir

192m

SN567759

135

213

Clem/Yeaman. Trig pillar.

During my early hill listing I paid little regard to name placement on the map, or the meaning of names and to what feature the name was appropriately applied to.  Therefore, I prioritised names for listing purposes that I now understand are either inappropriate or where another name is viewed as being more appropriate, with the previously listed name of Esgair-hir being that of a ruined farm house and not necessarily that of the hill. 

The old ruined farm house of Esgair-hir

As this hill comprises bounded land the Tithe map was consulted.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 168 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Banc in the apportionments, with the details on the Tithe map appearing in the parish of Llanychaearn and in the county named as Cardigan. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Banc, and this was derived from the Tithe map.

 

The full details for the hill are: 

Group:  Elenydd 

Name:  Banc

Previously Listed Name:  Esgair-hir 

OS 1:50,000 map:  135

Summit Height:  194.2m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SN 56817 75750 (Trimble GeoXH 6000)

Bwlch Height:  130.2m (LIDAR)

Bwlch Grid Reference:  SN 57845 73062 (LIDAR) 

Drop:  64.0m (Trimble GeoXH 6000 summit and LIDAR bwlch)

 

Myrddyn Phillips (March 2021)

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Bryn Bras (SN 573 772) - 78th significant name change

Survey post for Bryn Bras

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived from LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips. 

Bryn Bras (SN 573 772)

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Elenydd group of hills, which are situated in the central part of the Mid and West Wales Region (Region B, Sub-Region B2), and it is positioned with the coast to its west and a minor road to its immediate east with the A487 road farther to its east, and has the town of Aberystwyth towards the north north-east. 

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was listed under the invented and transposed name of Pen Morfa Bychan, with an accompanying note stating; Name from buildings to the West.

Pen Morfa Bychan

169m

SN573772

135

213

Name from buildings to the West

 

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 104 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Bryn Bras in the apportionments, with the details on the Tithe map appearing in the parish of Llanychaearn and in the county named as Cardigan. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Bryn Bras and this was derived from the Tithe map. 

 

The full details for the hill are: 

Group:  Elenydd 

Name:  Bryn Bras

Previously Listed Name:  Pen Morfa Bychan 

OS 1:50,000 map:  135

Summit Height:  169.8m (converted to OSGM15, Trimble GeoXH 6000) 

Summit Grid Reference:  SN 57323 77231 (Trimble GeoXH 6000) 

Bwlch Height:  127.7m (LIDAR) 

Bwlch Grid Reference:  SN 57194 76934 & SN 57199 76941 (LIDAR) 

Drop:  42.1m (Trimble GeoXH 6000 summit and LIDAR bwlch) 

 

Myrddyn Phillips (April 2021)

 

 

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Pt. 104.3m (SN 712 990) - 77th significant name change

Hill Reclassifications post for Pt. 104.3m

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Pt. 104.3m (SN 712 990)

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Pumlumon group of hills, which are situated in the north-western part of Mid and West Wales (Region B, Sub-Region B2), and it has the A487 road to its north and west, and a minor road to its immediate south-east, and has the town of Machynlleth towards the north north-east. 

Extrect from the Ordnance Survey 1:25,000 Explorer map

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was listed under the invented and transposed name of Mynydd Morben, with an accompanying note stating; Name from hall and farm to the North.

Mynydd Morben

100c

SN712990

135

23

Name from hall and farm to the North

 

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a near hall and farm and prefix it with the word Mynydd.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

However, occasionally even when research is conducted an appropriate name for the hill may not be found, and on such occasions the listing protocol is to use the point (Pt. 104.3m) notation, and for this hill, this is such an example. 

Therefore, the name this hill is now listed by in the 100m Twmpau is Pt. 104.3m, and this is being used as the author has not found an appropriate name for it either through historic research and / or local enquiry. 

 

The full details for the hill are: 

Group:  Pumlumon 

Name:  Pt. 104.3m

Previously Listed Name:  Mynydd Morben 

OS 1:50,000 map:  135

Summit Height:  104.3m (LIDAR) 

Summit Grid Reference:  SN 71207 99002 (LIDAR) 

Bwlch Height:  73.0m (LIDAR) 

Bwlch Grid Reference:  SN 71498 98989 (LIDAR) 

Drop:  31.2m (LIDAR) 

 

Myrddyn Phillips (April 2021)

Mapping Mountains - Significant Name Changes - 100m Twmpau

Pen y Cefn (SH 571 796) - 76th significant name change

Hill Reclassifications post for Pen y Cefn

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived from detail on contemporary maps produced from Ordnance Survey data. 

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Ynys Môn group of hills, which are situated in the north-western part of North Wales (Region A, Sub-Region A1), and it is positioned with the coast to its north-west, minor roads to its north, west, south and east, and has the village of Llanddona towards the south-east. 

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category. 

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-assessed and it was listed under the point (Pt. 157m) notation with 25m of drop, based on the 157m summit spot height and the 132m bwlch spot height that appear on the Ordnance Survey 1:25,000 Explorer map. 

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 193 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Pen y Cefn in the apportionments, with the details on the Tithe map appearing in the parish of Llanddona and in the county named as Anglesey. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Pen y Cefn, and this was derived from the Tithe map. 

 

The full details for the hill are: 

Group:  Ynys Môn 

Name:  Pen y Cefn

Previously Listed Name:  Pt. 157m 

OS 1:50,000 map:  114, 115

Summit Height:  157m (spot height) 

Summit Grid Reference:  SH 57163 79686 (spot height) 

Bwlch Height:  132m (spot height) 

Bwlch Grid Reference:  SH 58344 80453 (spot height) 

Drop:  25m (spot height summit and bwlch) 

 

Myrddyn Phillips (April 2021)

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Aberbechan Wood (SO 128 950) - 75th significant name change

Survey post for Aberbechan Wood

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis and a subsequent Trimble GeoXH 6000 survey conducted by Myrddyn Phillips. 

LIDAR image of Aberbechan Wood (SO 128 950)

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Carnedd Wen group of hills which are situated in the south-eastern part of North Wales (Region A, Sub-Region A4), and it is positioned with the B4389 road to its west and south, and has the village of Betws Cedewain towards the north north-west. 

The hill originally appeared in the 100m P30 list on Geoff Crowder’s v-g.me website under the transposed and invented name of Aberbechan Wood Top, with an accompanying note stating; Name from wood to the South.

Aberbechan Wood Top

192m

SO128951

136

215

Name from wood to the South

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of a wood and add the word Top to it.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

Extract from the Ordnance Survey 1:25,000 Explorer map

The name Aberbechan Wood appears on the contemporary Ordnance Survey 1:25,000 Explorer map and is strictly applicable to the wood positioned just to the south and west of the summit.  However, as this is the main named feature of this hill, this is an appropriate name to use for listing purposes for the hill. 

Therefore, the name this hill is now listed by in the 100m Twmpau is Aberbechan Wood, and this name was derived from the Ordnance Survey 1:25,000 Explorer map. 

 

The full details for the hill are: 

Group:  Carnedd Wen 

Name:  Aberbechan Wood

Previously Listed Name:  Aberbechan Wood Top 

OS 1:50,000 map:  136

Summit Height:  192.9m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SO 12815 95085 (Trimble GeoXH 6000)

Bwlch Height:  149.7m (LIDAR)

Bwlch Grid Reference:  SO 13155 95542 (LIDAR) 

Drop:  43.2m (Trimble GeoXH 6000 summit and LIDAR bwlch)

 

Myrddyn Phillips (April 2021)

 

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Glan yr Afon (SH 558 793) - 74th significant name change

Hill Reclassifications post for Glan yr Afon

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived from detail on contemporary maps produced from Ordnance Survey data. 

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Ynys Môn group of hills, which are situated in the north-western part of North Wales (Region A, Sub-Region A1), and it is positioned with the coast to its north-west, minor roads to its west, south-east and north-east and the B5109 road to its south-west, and has the village of Llanddona towards the east. 

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category. 

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-assessed and it was listed under the point (Pt. 129m) notation with an estimated c 22m of drop, based on the 129m summit spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map and an estimated c 107m bwlch height based on interpolation of 5m contouring between 105m – 110m that appear on the Ordnance Survey 1:25,000 Explorer map. 

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 232 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Glan yr Afon in the apportionments, with the details on the Tithe map appearing in the parish of Llanddona and in the county named as Anglesey. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Glan yr Afon, and this was derived from the Tithe map. 

 

The full details for the hill are: 

Group:  Ynys Môn 

Name:  Glan yr Afon

Previously Listed Name:  Pt. 129m 

OS 1:50,000 map:  114, 115

Summit Height:  129m (spot height) 

Summit Grid Reference:  SH 55815 79322 (spot height) 

Bwlch Height:  c 107m (interpolation) 

Bwlch Grid Reference:  SH 56143 78764 (interpolation) 

Drop:  c 22m (spot height summit and interpolated bwlch) 

 

Myrddyn Phillips (April 2021)

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Pen Ucheldref (SH 558 773) - 73rd significant name change

Hill Reclassifications post for Pen Ucheldref

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived from detail on contemporary maps produced from Ordnance Survey data. 

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Ynys Môn group of hills, which are situated in the north-western part of North Wales (Region A, Sub-Region A1), and it is positioned with a minor road to its immediate south-east and the B5109 road to its immediate south-west, and has the village of Llanddona towards the north-east. 

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category. 

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-assessed and it was listed as Cae’r Ffynnon; a name that appeared near to the summit of this hill on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage Map, with 21m of drop, based on the 133m summit spot height and the 112m bwlch spot height that appear on the Ordnance Survey 1:25,000 Explorer map. 

Extract from the Ordnance Survey 1:25,000 Explorer map

During my early hill listing I paid little regard to name placement on the map, or the meaning of names and to what feature the name was appropriately applied to.  Therefore I prioritised names for listing purposes that I now understand are either inappropriate or where another name is viewed as being more appropriate. 

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 54 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Pen Ucheldref in the apportionments, with the details on the Tithe map appearing in the parish of Llansadwrn and in the county named as Anglesey. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Pen Ucheldref, and this was derived from the Tithe map, with Cae’r Ffynnon being the name of a farm positioned at SH 55656 77363 and Pen Ucheldref the name of a farm positioned at SH 55884 77174, with the Tithe naming the land where the summit of this hill is situated as Pen Ucheldref. 

 

The full details for the hill are: 

Group:  Ynys Môn 

Name:  Pen Ucheldref

Previously Listed Name:  Cae’r Ffynnon 

OS 1:50,000 map:  114, 115

Summit Height:  133m (spot height) 

Summit Grid Reference:  SH 55805 77334 (spot height) 

Bwlch Height:  112m (spot height) 

Bwlch Grid Reference:  SH 57062 78438 (spot height) 

Drop:  21m (spot height summit and bwlch) 

 

Myrddyn Phillips (March 2021)

 

 

Mapping Mountains - Significant Name Changes - 100m Twmpau

Bonc y Garreg (SH 486 804) - 72nd significant name change

Hill Reclassifications post for Bonc y Garreg

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill confirmed by LIDAR analysis conducted by Myrddyn Phillips. 

LIDAR image of Bonc y Garreg (SH 486 804)

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Ynys Môn group of hills, which are situated in the north-western part of North Wales (Region A, Sub-Region A1), and it is positioned with the B5110 road to its west and has a minor road to its south-east, and has the village of Benllech towards the north-east. 

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category. 

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-assessed and it was listed under the point (Pt. 114m) notation with an estimated c 27m of drop, based on the 114m summit spot height that appeared on the Ordnance Survey Vector Map Local hosted on the Geograph website and which was entitled the Interactive Coverage map and an estimated c 87m bwlch height based on interpolation of 5m contouring between 85m – 90m that appear on the Ordnance Survey 1:25,000 Explorer map. 

Extract from the Ordnance Survey 1:25,000 Explorer map

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 748 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Bonc y Garreg in the apportionments, with the details on the Tithe map appearing in the parish of Llanddyfnan and in the county named as Anglesey. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Bonc y Garreg, and this was derived from the Tithe map. 

 

The full details for the hill are: 

Group:  Ynys Môn 

Name:  Bonc y Garreg

Previously Listed Name:  Pt. 114m 

OS 1:50,000 map:  114, 115

Summit Height:  114.0m (LIDAR) 

Summit Grid Reference:  SH 48627 80418 (LIDAR) 

Bwlch Height:  87.1m (LIDAR) 

Bwlch Grid Reference:  SH 48221 80516 (LIDAR) 

Drop:  26.9m (LIDAR) 

 

Myrddyn Phillips (March 2021)

Mapping Mountains - Significant Name Changes - 100m Twmpau

Rhuddlan Fawr (SH 486 812) - 71st significant name change

Hill Reclassifications post for Rhuddlan Fawr

 

There has been a Significant Name Change to a hill that is listed in the 100m Twmpau, with the summit height, bwlch height and their locations, the drop and status of the hill derived from detail on contemporary maps produced from Ordnance Survey data. 

Although the name remains as first listed, this was based on presumption which has fortunately now been substantiated by the Tithe; therefore the details for this hill are being documented under the Significant Name Changes heading. 

The criteria for the list that this name change applies to are:

100m Twmpau - Welsh hills at or above 100m and below 200m in height with 30m minimum drop, with an accompanying sub list entitled the 100m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 100m and below 200m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward. 

The 100m Twmpau by Myrddyn Phillips

The hill is adjoined to the Ynys Môn group of hills, which are situated in the north-western part of North Wales (Region A, Sub-Region A1), and it is positioned with a minor road to its north-east and the B511o road to its north-west, and has the village of Benllech towards the east north-east. 

When the original 100m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was not included in the Hills to be surveyed sub list, as it was considered not to meet the criteria then used for this sub category. 

After the sub list was standardised, and interpolated heights and drop values also included the details for this hill were re-assessed and it was listed under the name of Rhuddlan Fawr with an estimated c 22m of drop, based on the 101m summit spot height and an estimated c 79m bwlch height based on interpolation of 5m contouring between 75m – 80m that appear on the Ordnance Survey 1:25,000 Explorer map. 

Extract from the Ordnance Survey 1:25,000 Explorer map

During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance use what I presumed was the name of the hill, but what in fact is the name of a farm.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found. 

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales. 

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 36 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as a part of Rhuddlan Fawr in the apportionments, with the details on the Tithe map appearing in the parish of Llanfair Mathafarn Eithaf and in the county named as Anglesey. 

Extract from the apportionments

Therefore, the name this hill is now listed by in the 100m Twmpau is Rhuddlan Fawr, and this was derived from the Tithe map.

 

The full details for the hill are: 

Group:  Ynys Môn 

Name:  Rhuddlan Fawr

Previously Listed Name:  Rhuddlan Fawr 

OS 1:50,000 map:  114, 115

Summit Height:  114m (triangulation pillar) 

Summit Grid Reference:  SH 48673 81249 (triangulation pillar) 

Bwlch Height:  92m (spot height) 

Bwlch Grid Reference:  SH 48784 81428 & SH 48697 81460 (spot height) 

Drop:  22m (triangulation pillar summit and spot height bwlch) 

 

Myrddyn Phillips (March 2021)