51.522118189614524, -3.5532030889493202
Sir Lawrence Berkerolle was lord of Coity (or Coityf).
Site record for Coity Castle, Coflein (National Monuments Record of Wales)
Ralph A. Griffiths, "Owain Glyndŵr and the siege of Coity Castle, 1404-1405," Morgannwg transactions of the Glamorgan Local History Society 45 (2001): 5-28.
Margaret K. Smith