Disgrifiad
Y Gaer, St Nicholas, Glamorgan; measured drawing comprising plan and profile view surveyed and plotted by H.J. Thomas 17th February 1981 and re-drawn by C.J. Spurgeon, 5th March 1981.
Enw Casgliad
GIEC - RCAHMW Glamorgan Inventory Early Castles
Cychwynnwr
Mr C. Jack Spurgeon, Howard J. Thomas, RCAHMW
