The Tradition: Geoffrey of Monmouth and other medieval Arthurian writers tell us that Arthur was taken to the Isle of Avalon to be healed of his wounds after the Battle of Camlann. Later tradition assumed that he died and was buried there and identified the place as Glastonbury in Somerset. The Theory & Discovery: Blackett & Wilson claim that one of the two figures who went to make up "King Arthur" is to be identified with the Emperor Magnus Maximus's son, King Anwn of South Wales. This man, who occasionally may have spelt his name Arthun, they identify with both...