Galentivet
Brother of Girflet and cousin of Lancelot. Gawaine took him as his squire and protégé.
Galentivet was once involved in an attack on Sir Escanor the Handsome, which was regarded as treacherous. Galentivet brought an accusation of murder against Gawaine, and Gawaine was reluctant to defend himself, Galantivet ambushed Escanor and wounded him.
Source
Escanor | Girart D’Amiens, c. 1280