Princess Changrak
Princess Changrak 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.
The princess was born in 1130 during her father’s 8th year of reign. 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. Because they were descended from the same ancestor, the princess was also Wang Seong's paternal fourth cousin.
They later had a daughter, the future Queen Wondeok, who married King Gangjong, and had two sons: Wang Won the Marquess Gyeseong and Wang Jin the Marquess Yeongin, who would become the father of King Huijong's second wife.
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 and suspended the inquiry for three days.