Agrauel, Agresianx, Greu, Grevi, Grex
A good knight who fought on the side of Arthur and Leodegan (Leodegrance) in a battle against the Saxons at Camilyard (Cameliard).
His mother was known as the Wise Lady of the Forest of No Return.
See also
Greu of Alenie | The Legend of King Arthur
Source
Vulgate Merlin | 1220-1235