Three entries with the name Pinabel.
Pinabel
One of the twelve who accompanied Alexander from Greece to Britain, where Arthur knighted them all at the outset of Count Angrs’ rebellion.
Pinabel was also with Alexander’s party when it penetrated Windsor to capture Angrs. Though Pinabel must have survived the episode, Chrétien tells us nothing more about him.
Source
Cligés | Chrétien de Troyes, late 12th century
Pinabel
A Knight of the Round Table present at Corbenic (Carbonek) when Galahad completed the Grail Quest.
Source
Post-Vulgate Queste del Saint Graal | 1230-1240
Pinabel
Pinabello
A knight who fell in love with a maiden named Tessina.
Tessina’s mother, on condition of marriage, made Pinabel kill Uriées, his own brother, who had slain Tessina’s uncle, Garionne. Pinabel did so, sparking a war between him and his other brothers. They eventually slew him in the valley of Zetro and Tristan had to save Tessina from the family.
Sources
Prose Tristan | 1230-1240
La Tavola Ritonda | 1325–1350