Agwisance
King of Ireland who rebelled against Arthur and later competed in tournaments.
Agwisance is the King of Ireland in Malory's Le Morte d'Arthur, attested in three passages across Books I and VII. He first appears among the eleven kings who raised a host against Arthur, where "King Agwisance of Ireland" swore "to bring five thousand men of arms on horseback" (Le Morte d'Arthur, Book I, Ch. XII). In that rebellion's battle, "Lucas saw King Agwisance, that late had slain Moris de la Roche," and unhorsed him with a great spear (Le Morte d'Arthur, Book I, Ch. XV).
Agwisance reappears much later in the narrative, during the tournament following Gareth's wedding, where "Sir Agwisance, the King of Ireland, encountered with Sir Gareth, and there Sir Gareth smote him from his horse, saddle and all" (Le Morte d'Arthur, Book VII, Ch. XXVIII). The shift from rebel king to tournament participant charts the broader pattern of Arthurian consolidation -- former enemies become courtly competitors.
Appears in: Beings, Entities in Le Morte d'Arthur, British Tradition