Suggested embanked stone circle around the churchyard thought to be the remains of the churchyard wall demolished in 1901.
See standard source for full documentation and investigation: Briggs, C.S. 1979, 'Ysbyty Cynfyn churchyard wall', Arch. Camb. 128, 138-46. Also, Cardiganshire County History Volume 1, 1994, pages 139-142.

T. Driver, RCAHMW, 22nd March 2010.