Late 5th century
Early 6th century
King Arthur (half-brother)
Queen of Albion (after the death of Arthur)
Relationship with Percival
Morgana and Arthur learned they were half-siblings through their father soon after Arthur became king and developed a close relationship. During this time, Morgana fell in love with Percival, one of Arthur's knights. During a battle, Arthur seemingly witnessed the death of Percival at the hands of the Morrigan and he informed his sister.
Morrigan tried to manipulate Morgana after revealing Percival was trapped in her dungeon. She wanted Morgana to put a potion in Arthur's wine, though she could no betray her brother and the potion was taken by lady Guinevere. Morgana then became determined to free Percival herself and infiltrated Morrigan's castle with the help of a stable boy named Kay.
While trying to free Percival, he appeared and stabbed Kay, revealed that Morrigan was controling him with her magic. He nearly killed her until Morrigan's death freed him. Morgana returned to Camelot, where she learned of her brother's death and became ruler of the kingdom.