King Arthur himself, having put on a coat of mail suitable to the grandeur of so powerful a king, placed a golden helmet upon his head, on which was engraven the figure of a dragon; and on his shoulders his shield called Priwen; upon which the picture of the blessed Mary, mother of God, was painted, in order to put him frequently in mind of her. Then girding on his Caliburn, which was an excellent sword made in the isle of Avallon,