Henry Royston Loyn (16 June 1922 – 9 October 2000), FBA, was a British historian specialising in the history of Anglo-Saxon England. His eminence in his field made him a natural candidate to run the Sylloge of the Coins of the British Isles, which he chaired from 1979 to 1993. He was Professor of Medieval History in the University College of South Wales and Monmouthshire and afterwards Professor of Medieval History at Westfield College in the University of London.[1]