Three entries with the name Julian.
Julian
A Knight of the Round Table who participated in the Grail Quest.
Source
Post-Vulgate Queste del Saint Graal | 1230-1240
Julian
An Arthurian knight who joined Gawain’s quest to conquer Rigomer castle.
Source
Les Merveilles de Rigomer | Jehan, mid to late 13th century
Julian
A knight who, at the insistance of a lady, swore to slay any knight who passed his castle. He was conquered by Floriant, the foster-son of Morgan Le Fay, and became Floriant’s companion.
The two knights helped to save Rome from a siege by Saracens. Afterwards, Julian visited Arthur’s court and became a Knight of The Round Table.
Source
Floriant et Florete | c. 1250–1275