Saturday, 9 July 2016

Mapping Mountains – Significant Name Changes – Y Pellennig and Y Pedwarau

Cerrig Coegion (SN 790 176)

This is the tenth post under the heading of Significant Name Changes, and the following details are in respect of a hill that was surveyed with the Trimble GeoXH 6000 on the 10th July 2014.

The hill is situated in Y Mynydd Du, this range of hills forms the western part of the Brecon Beacons National Park (Parc Cenedlaethol Bannau Brycheiniog), and takes in the remotest land in mainland Wales with the hill listed as the third remotest in distance from summit to the nearest paved public road in mainland Wales.  The nearest towns to the hill are Ystradgynlais to the south and the small community of Glyntawe to the east.  

The Trimble GeoXH 6000 gathering data at the summit of Cerrig Coegion (SN 790 176)

The hill first made an appearance in a hill list as Pen Bwlch y Ddeuwynt in the The Welsh 400m Peaks which was compiled by Myrddyn Phillips and made available to the rhb Yahoo Group file database by Rob Woodall in 2002.  This listing was subsequently published on Geoff Crowder’s website in 2004 and was the originator for the list named Y Pedwarau and which is now co-authored with Aled Williams.

The hill originally appeared in the rhb Yahoo Group file database and the website under an invented name; Pen Bwlch y Ddeuwynt, with an accompanying note on the website stating; Name from bwlch to the North-West.  As was my liking during my early hill listing I thought it appropriate to invent a name for a hill if no name seemed to appear for it on Ordnance Survey maps of the day.  My preference was to use the nearest name to the summit that appeared on the map and prefix it with the word Pen, Bryn or Moel.  This is not a practice that I now advocate as with a little research either conducted locally or historically an appropriate name for the hill can usually be found.  Subsequently extensive place-name research has taken place for Y Mynydd Du and the details included in Y Pedwarau and Y Pellennig – The Remotest Hills of Wales.

Pen Bwlch y Ddeuwynt
    Trig pillar at 471m to the South. Name from bwlch to the North-West.

The name this hill is now listed by in 'Y Pedwarau' (Europeaklist and Haroldstreet 2013) and in 'Y Pellennig – The Remotest Hills of Wales' (Europeaklist, Haroldstreet, and Mapping Mountains 2015) is Cerrig Coegion.  This name was derived from local research as well as historical documentation with the following brief explanation appearing in the booklet version of Y Pellennig – The Remotest Hills of Wales:

The name is also recorded in ‘Bugail y Mynydd Du’ by Rhys Davies.

The full details for the hill are:

Group:  Y Mynydd Du

Name:  Cerrig Coegion

Previously Listed Name:  Pen Bwlch y Ddeuwynt 
Summit Height:  473.4m (converted to OSGM15)

OS 1:50,000 map:  160

Summit Grid Reference:  SN 79087 17673
Drop:  c 56m

Myrddyn Phillips and Aled Williams (July 2016)

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