Claudin (or Claudine) is the son of the Frankish King Claudas in the Arthurian legend. He appears in the Old French Lancelot-Grail and Thomas Malory's 15th century English work Le Morte d'Arthur, in sections based on the French cycle. His father is a villain during King Arthur's early reign, an enemy to Arthur's French allies Ban and Bors, but Claudin is a virtuous young man and wants no part of his father's schemes. Claudas eventually succumbs to Arthur and company, and Claudin seeks adventure elsewhere. He becomes one of only twelve knights to achieve the Holy Grail, along with Galahad, Bors the Younger, and Percival.