Lionel is a character in Arthurian legend. He is the younger son of King Bors of Gaunnes (or Gaul) and Evaine and brother of Bors the Younger. First recorded in the Lancelot-Grail cycle, he is a double cousin of Lancelot and cousin of Lancelot's younger half-brother Hector de Maris (not to be confused with the older Sir Ector, who was King Arthur's foster-father). He is also the subject of a traditional ballad.