Queen Wonyong

Queen Wonyong of the Chŏngju Yu clan was a Goryeo royal family member as the granddaughter of King Daejong, son of King Taejo who became the 5th wife of her half first cousin once removed, King Hyeonjong which she then followed her grandmother's clan, the Chŏngju Yu.

Her husband's mother, Grand Queen Mother Hyosuk was initially her paternal aunt, while his first and second wife was initially her first cousin (her uncle's daughters). Yu entered the palace in 1013 (4th year reign of King Hyeonjong) as his fifth wife and was posthumously honoured as Queen Wonyong later. They didn't have any children.