Disgrifiad
Llantrithyd Castle Ringwork, Glamorgan; measured drawing comprising plan and profiles produced by H.J. Thomas, with annotations by D.J. Roberts, undated.
Enw Casgliad
GIEC - RCAHMW Glamorgan Inventory Early Castles
Cychwynnwr
Dylan J. Roberts, Howard J. Thomas, RCAHMW
