Gorlois le Fay (Morgana)

Gorlois el Fay was the husband Igraine prior to his death. He is also the father of Morgana and Morgause.

Early Life
Gorlois was Igraine's husband and Morgana and Morgause's father. He died in a war with Uther who married Igraine himself and fathered Arthur and Anna Pendragon with her.

Season 1
Gorlois was resurrected by Nimue and became the Black Knight. He agreed to work for her in order to get revenge on Uther for killing him and raping Igraine.

Morgana discovered that Gorlois was her father. Morgana attempted to stop Gorlois by using Excalibur (having gotten Arthur to pull it out the stone)