In Arthurian legend, Ban is the King of Benwick. He is the father of Sir Lancelot and Sir Hector de Maris, the brother of King Bors, and an early ally of King Arthur. The Matter of Britain is a name given collectively to the legends that concern the Celtic and legendary history of the British Isles, centering around King Arthur and the knights of the Round Table. ... This entry was adapted from the 1911 Encyclopedia Britannica. ... Sir Hector de Maris is a Knight of the Round Table in Arthurian Legend. ... Bors (or Bohort) is the name of two knights in Arthurian Legend, one the father and one the son. ... King Arthur is an important figure in the mythology of Great Britain, where he appears as the ideal of kingship in both war and peace. ...