Brinesent, Hermesan, Hermesent, Hermesente

Arthur's sister in the Vulgate Merlin.

The daughter of Hoel and Igerne (Igraine), she married King Urien (Uriens) and had a son named Yvain. Her sister was called Blasine. She encouraged her son to take service with Arthur.

Her role is assumed by Morgan le Fay in the Post-Vulgate.