Mapping Mountains – Significant Name Changes – 100m Twmpau

Cae (SN 560 038)

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 (SN 560 038)

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.

100m Twmpau by Myrddy Phillips

The hill is adjoined to the Mynydd Sylen group of hills, which are situated in the southern part of South Wales (Region B, Sub-Region B5), and is positioned between the stream valleys of the Afon Morlais to its west and the Afon Gwili to its east, and has the towns of Llanelli to the south-west and Pontarddulais to the east.

The hill appeared in the original 100m height band of Welsh P30 hills published on Geoff Crowder’s v-g.me website, under the invented and transposed name of Bryn Tyreglwys, with an accompanying note stating; Name from farm to the South-West.

Bryn Tyreglwys

119m

SN561038

159

164/178

Name from farm 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.  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 105 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 in the apportionments, with the details on the Tithe map appearing in the parish of Llangennech 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 Cae, and this was derived from the Tithe map.

The full details for the hill are:

Group:  Mynydd Sylen

Name:  Cae

Previously Listed Name:  Bryn Tyreglwys 

OS 1:50,000 map:  159

Summit Height:  119.0m (LIDAR)

Summit Grid Reference:  SN 56069 03819 (LIDAR)

Bwlch Height:  80.0m (LIDAR)

Bwlch Grid Reference:  SN 55961 04021 (LIDAR)

  

Drop:  39.0m (LIDAR)

Myrddyn Phillips (November 2018)