Wondeok

Queen Wondeok of the Yu clan was a Goryeo royal family member as the descendant of King Munjong. She became queen consort through her marriage to her cousin once removed, King Gangjong, becoming his second wife She then changed her initial clan and became the mother of his only successor, King Gojong. Gangjong was her close relative in the maternal line, but very distant in the paternal line.