NIGHTBRINGER | The Arthurian Encyclopedia

Guincemain


A knight who, during the Grail Quest, besieged the castle of Lord Boncenes.

Galahad came upon the siege, just as Guincemain was about to start catapaulting his prisoners into the castle. Galahad killed Guincemain and put an end to the siege.


Source
Prose Tristan | 1230-1240