Disgrifiad
Glamorgan Gwent Archaeological Trust Ltd report, "Archaeological Excavation: Herbert Chapel, St Mary's Priory Church, Abergavenny, Monmouthshire, report on further work," by David Maynard for St Mary's Monuments Restoration Fund, dated June 1996. GGAT report no. 96/030; GGAT project no. A323; GGAT excavation no. 247
