Location and coordinates are for the approximate centre of Pengam within this administrative area. Geographic features and populated places may cross administrative borders.
Gazetteer of the British Isles (Edinburgh: Bartholomew, 1887). John Bartholomew
Pengam, ry. sta., on E. border of Glamorgan, If mile S. of Bargoed sta. and 17 miles NW. of Newport by rail; P.O.