DescriptionThe surviving remains of Penlle'r Castell consist of impressive earthworks with slight vestiges of the masonry which once crowned them. It has been suggested with reasonable confidence that this unconventional structure was founded by William de Braose II as a military frontier castle ca 1252.
RCAHMW 2000 'Glamorgan - the later castles', 273-9.
RCAHMW, December 2008