edition; published in 1983
book (work)
book review published in 2000 in the Journal of the Pembrokeshire Historical Society
chapter published in 1991
edition; published in 1977
book published in 1994
book published in 2000
chapter published in 1984
edition; published in 1988
Book
book; published in 2014
book; published in 1993
book; published in 1972
book by Ralph A. Griffiths & Roger S. Thomas
chapter published in 1971
biographical article in the ODNB
chapter published in 2000
chapter published in 2011 in Wales and the Welsh in the Middle Ages
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