Amgyffred yr Amgylchedd yn Oes Gerallt Gymro / Perceptions of the Environment in the Age of Gerald of Wales
Maes yr Eisteddfod - Wrecsam Cymdeithasau 1, Wrecsam, United KingdomYr Athro Huw Pryce FRHistS FLSW
Athro Emeritws Hanes Cymru, Prifysgol Bangor
Professor Huw Pryce FRHistS FLSW
Professor Emeritus of Welsh History, Bangor University