Corbazin, Corbenic, Sormadant
The lady of Corbalain was Sir Galescalain’s (Galeshin) aunt. Galescalain’s cousin, la Dame del Blanc Castel, is said to be the daughter of la Dame de Corbalain.
Her daughter encountered Galescalain during his adventures and steered him toward the adventure of the Dolorous Tower.
Source
Vulgate Lancelot | 1215-1230