 Dunstanburgh, with an ancient fort at its centre encircled by water, may have been an allusion to Camelot, and in turn to Thomas's claim to political authority over the failing Edward II, and was also strikingly similar to contemporary depictions of Sir Lancelot's castle of "Joyous Garde".Dunstanburgh Castle has been closely associated with the legend of Sir Guy the Seeker since at least the early 19th century.Different versions of the story vary slightly in their details, but typically involve a knight, Sir Guy, arriving at Dunstanburgh Castle, where he was met by a wizard and led inside.