Mapping Mountains – Significant Name Changes – Y Pedwarau - The 400m Hills of Wales

Mynydd Tŷ Cerrig (SJ 147 405)

There has been a Significant Name Change to a hill that is listed in the Y Pedwarau, and the following details are in respect of a hill that was surveyed with the Trimble GeoXH 6000 on the 18^th September 2015.

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

Y Pedwarau - These are the Welsh hills at and above 400m and below 500m in height that have 30m minimum drop.  The list is co-authored by Myrddyn Phillips and Aled Williams, and the introduction to the Mapping Mountains publication of this list appeared on the 30th January 2017.

The hill is situated in the Y Berwyn, which is an extensive range of hills in the south-eastern part of north Wales.  The hill is positioned between the small communities of Glyndyfrdwy to the north, Llangollen to the east north-east and Glyn Ceiriog to the east south-east.

Mynydd Tŷ Cerrig (SJ 147 405)

The hill appeared in the 400m P30 list on Geoff Crowder’s v-g.me website under the invented name of Pen Ty’n-y-graig, with an accompanying note stating; Name from wood to the North-East, with Ty’n-y-graig  being the name of a farm and its adjacent wood; Coed Ty’n-y-graig.  

Pen Ty'n-y-graig

476m

SJ148405

125

255

Name from wood to the North-East

    

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 farm names and put Pen, Bryn or Moel in front of them.  This is not a practice that I now advocate as with research either conducted locally or historically an appropriate name for the hill can usually be found and it was local enquiry that gave the name of Mynydd Tŷ Cerrig for this hill.

Therefore, the name this hill is now listed by in the Y Pedwarau is Mynydd Tŷ Cerrig (conforming to standard modern Welsh), and this was derived from local enquiry.

The full details for the hill are:

Group:  Y Berwyn

Name:  Mynydd Tŷ Cerrig

Previously Listed Name:  Pen Ty’n-y-graig 

Summit Height:  476.2m (converted to OSGM15)

OS 1:50,000 map:  125

Summit Grid Reference:  SJ 14798 40529 

 

Drop:  32.1m (converted to OSGM15)

For details on the survey of Mynydd Tŷ Cerrig

Myrddyn Phillips and Aled Williams (September 2016)