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In 1887, John Bartholomew's Gazetteer of the British Isles described Pen Y Graig like this:
Pen-y-Graig, mining vil., 3m. NW. of Llantrisaint, Glamorgan; P.O., T.O.
Pen Y Graig is now part of RHONDDA; CYNON; TAFF District. Click here for graphs and data of how RHONDDA; CYNON; TAFF has changed over two centuries. For statistics about Pen Y Graig itself, go to Statistics.
How to reference this page:
GB Historical GIS / University of Portsmouth, History of Pen Y Graig, in Rhondda; Cynon; Taff and Glamorgan | Map and description, A Vision of Britain through Time.
URL: https://www.visionofbritain.org.uk/place/24000
Date accessed: 08th April 2026
Click here for more detailed advice on finding places within A Vision of Britain through Time, and maybe some references to other places called "Pen Y Graig".