NIGHTBRINGER | The Arthurian Encyclopedia

Knight of the Bridge


Former ruler of the Dolorous Guard, the castle Lancelot conquered. He may be identical to Brandin of the Isles.

He was called the “knight of the bridge” because he guarded a bridge and attacked all Queen’s Knights, for he harbored a hate for Guenevere.


Source
Prose Tristan | 1230-1240