Agrawain, Sir, or Agravain, known also as "The Desirous" and "The Haughty" (L'orgueilleux), is described by Sir Thomas Malory, Morte d'Arthur, iii, 142, as the son of Lot, king of Orkney, and his queen Margawse, half sister of King Arthur.  He sympathized with Sir Mordred in his hatred of Sir Launcelot.  They were the first to awaken Arthur's suspicions in regard to Guinevere, asking him to spend the day in hunting while they kept watch over the queen's movements.  According to their expectation Guinevere summoned Sir Launcelot to her private chamber; the watchers with twelve other knights broke down the door, but Launcelot slew all of them save Mordred, who made good his escape. (Heroes and Heroines of Fiction, Walsh, 1915)