The son of King Lot of Galway.

Midomidas arrived at Arthur’s court after the conquest of Rigomer Castle. He immediately requested the right of combat against Miraudiaus, a knight against whom Arthur was pledged to send a champion.

Arthur granted his request, but Midomidas relinquished the right to Lancelot when the latter arrived.

Fourth Continuation of Chrétien’s Perceval | Gerbert de Montreuil, c. 1230
Les Merveilles de Rigomer | Jehan, mid to late 13th century