Claim: Agravain is the second son of King Lot and King Arthur's nephew and is a knight of the round table who was married to Laurel and killed by Lancelot with a lance.
Evidence: He is the second eldest son of King Lot of Orkney with one of King Arthur's sisters known as Anna or Morgause, thus nephew of King Arthur, and brother to Sir Gawain, Gaheris, and Gareth, as well as half-brother to Mordred. Sir Agravain (/æɡræveɪn/) is a Knight of the Round Table in Arthurian legend, whose first known appearance is in the works of Chrétien de Troyes. In Thomas Malory's Le Morte d'Arthur, Arthur marries him with Laurel, a niece of Lynette and Lyonesse. In the French prose cycle tradition included in Thomas Malory's Le Morte d'Arthur, together with Mordred, he then plays a leading role by exposing his aunt Guinevere's affair with Lancelot, which leads to his death at the hands of Lancelot. When Lancelot and his party attack, Lancelot, riding ahead of the others, charges deliberately at Agravain, whom he recognises, and strikes him though his body with his lance.