Queen Wonseong of the Ansan Kim clan (Korean: 원성왕후 김씨; Hanja: 元成王后 金氏; 995 – 15 August 1028[a]) or formally called as Grand Queen Mother Wonseong (원성왕태후; 元成王太后) was a Korean queen consort as the 3rd wife of King Hyeonjong of Goryeo[1] who became the mother of his successors, Deokjong and Jeongjong.
[2] In 1010, King Hyeonjong who had fled to Naju, Jeolla Province due to the Khitan's invasion, stayed overnight in Gongju, South Chungcheong Province at Kim Unbu's house and Kim welcomed him with made his eldest daughter serve Hyeonjong comfortably.
According to Goryeosa, she firstly entered the palace in 1011 and was honoured as Primary Lady Yeongyeong (연경원주; 延慶院主) not long after bearing her eldest son, Wang Heum in 1016.
In 1022, she formally became a Queen consort and in 1027 stayed in "Janggyeong Palace" (장경궁; 長慶宮).
However, she eventually died a year later and was buried in Myeongneung tomb (명릉; 明陵); she was later enshrined in her husband's shrine.