Great Trefgarn Mountain (SM 944 243)
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 Great Trefgarn Mountain (SM 944 243) |
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.
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 3rd
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 Garn Fawr 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
and south, the B4330 road to its west and the A40 road to its east, and has the
town of Hwlffordd (Haverfordwest) 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 Great Treffgarne Mountain, which
is the composition of a prominent name that appears close to the summit of this
hill on the Ordnance Survey 1:50,000 Landranger and 1:25,000 Explorer map.
Extract from the Ordnance Survey 1:25,000 Explorer map |
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 and where this is substantiated by either
historic documentation and/or contemporary usage should be prioritised in
favour of a contemporary anglicised or English version of the name. 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.
Since the original publication of the Welsh P30
lists on Geoff Crowder’s v-g.me website a number of place-name books have
been accessed to either find or substantiate locally known and/or historic
names for hills. One of the books
accessed is the Dictionary of the
Place-Names of Wales, published in 2007 by Gomer Press and researched and
written by Hywel Wyn Owen and Richard Morgan.
It is this book that documents the preferred composition of the middle
word of the listed name of this hill as Trefgarn, noting; A common local alternative, under English influence, is Treffgarn (e).
Therefore, the name this hill
is now listed by in the 100m Twmpau and Y Trechol – The Dominant Hills of Wales is
Great Trefgarn Mountain, and although a fully Welsh name has not been found by
the author for this hill the preferred Welsh composition of Trefgarn is
favoured, and this is documented in the Dictionary
of the Place-Names of Wales book.
The full details for the hill are:
Group: Garn Fawr
Name: Great Trefgarn
Mountain
Previously Listed Name:
Great Treffgarne Mountain
OS 1:50,000 map: 157,
158
Summit Height: 165.2m (LIDAR)
Summit Grid Reference: SM 94454 24305 (LIDAR)
Bwlch Height: 97.1m (LIDAR)
Bwlch Grid Reference: SM 93483 23607 (LIDAR)
Drop: 68.1m (LIDAR)
Dominance: 41.22% (LIDAR)
Myrddyn Phillips (June
2024)
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