Redknap Mark, Lewis John M. A Corpus of Early Medieval Inscribed Stones and Stone Sculptures in Wales. Volume 1. Breconshire, Glamorgan, Monmouthshire, Radnorshire, and Geographically Contiguous Areas of Herefordshire and Shropshire

Cardiff: University of Wales Press, 2007. — xxi, 632 p.Inscribed stones and stone sculpture form the most prolific body of material evidence that survives for early medieval Wales. The inscribed memorial stones in Latin or Old Irish ogam commemmorate the lives the Welsh elite of the time and are crucial to understanding the continutity of early medival Welsh culture with the preceding Roman culture, Irish settlements, and early Welsh kingdoms.