Gais Chasteaus
A lively, splendid castle on the Thames river, ruled by Trahan the Gay, and inhabited by Trahan’s sons Melian the Gay and Drian the Gay, the latter of whom was rescued by Lancelot from a coffin. Afterwards, Lancelot attended a celebration at the Gay Castle.
An unnamed Lord of the Gay Castle was one of Arthur’s allies against the Saxons. Arthur gave a castle of the same name to Morholt of Ireland.
Sources
Vulgate Lancelot | 1215-1230
Le Livre d’Artus | Early 13th century
Prose Tristan | 1230-1240