Princess Changrak

Princess Changrak (d. 1216 ) was a Goryeo Royal Princess as the third daughter of King Injong and Queen Gongye who would become the mother of King Gangjong's second wife, Queen Wondeok.

Although the date when she was born is unknown, seeing that her youngest sister was born in 1141, it was believed that she was born before that. In 1151, alongside her younger sister, Princess Yeonghwa, they formally became a princess. Then, she married her paternal aunt's son–Wang Seong the Marquess Sinan and had two sons: Wang Won the Marquess Gyeseong  and Wang Jin the Marquess Yeongin  who would become the father of King Huijong's wife, also a daughter who married King Gangjong. Meanwhile, since came from the same ancestor, the princess was once Wang Seong's paternal fourth cousin.

To honor his deceased maternal grandmother, King Gojong reduced the number of palace's side dishes and ordered his officials to wore mourning clothes for a day. Meanwhile, Wang Seong died in 1178 (8th years reign of King Myeongjong) and suspended the inquiry for three days.