Find link is a tool written by Edward Betts.
searching for Pen Llystyn 1 found (2 total)
alternate case: pen Llystyn
Royal Commission on the Ancient and Historical Monuments of Wales
exact match in snippet
find links to article
discoveries of the Roman marching camp at Penygwryd and Roman fort at Pen Llystyn. Volume III included the first complete survey ever made of Bardsey,