A Knight of the Round Table from Brittany.
He and Sir Tor sought to learn the fate of Merlin, after he had been imprisoned by Nimue.
In their travels, they encountered Bagdemagus, who resented them for having been promoted to the Round Table ahead of him. After defeating them both in joust, Bagdemagus told them of Merlin’s fate.
Source
Post-Vulgate Suite du Merlin | 1230-1240