Princess Yeonhui (Korean: 연희궁주; Hanja: 延禧宮主) was a Goryeo Royal Princess as the first and oldest daughter of King Myeongjong and Queen Uijeong,[2] also the first younger sister of King Gangjong.
[citation needed] In 1173, she formally called as Royal Princess of the Yeonhui Palace (연희궁공주; 延禧宮公主)[3] and in 1179, she married Wang-Jin, Marquess Yeongin (왕진 영인후).
[4] He later died on 27 October 1220 (7th year reign of Gojong of Goryeo).
[5] Her relationship with Sinjong was once "Niece-Uncle", but later became "In-law" since their child got married (King Huijong and Queen Seongpyeong).