The princess was born on 1456 and was named Yi Gyeong-geun (Korean: 이경근; Hanja: 李慶根).
[4][5] After her father's death in 1457, the 3rd year of King Sejo's reign, the Princess, along with her mother and brothers lived outside the palace.
[6] In 1470, after her younger brother, Grand Prince Jalsan, ascended the throne, her father was posthumously elevated to King Deokjong (덕종왕; 德宗王) and her mother was honoured as Queen Insu (인수왕비; 仁粹王妃), and later promoted to Queen Dowager (대비; 大妃).
The princess later died on October 4, 1482, in the 13th year of the reign of her brother, Seongjong of Joseon,[7] and it was reported that he was very sad about her death.
The princess' granddaughter later married the future Queen Dangyeong's older brother, Shin Hong-pil.