[3][4] The future Princess Euncheon was born as the daughter of merchant Im-Sin (임신) who served Grand Prince Danyang, a grandson of Chungnyeol of Goryeo.
[5] While she and her father made their living by selling porcelain vessels, she then was found and favored not long after that by King Chunghye, also become his concubine and most favourite wife.
Seeing about this, Im was jealous and tried to stop it, but for comforted her, the King then trusted the royal title Princess Euncheon (은천옹주; 銀川翁主) to her.
[4] It was said that King Chunghye usually took an energized drug called Yeoryak (열약) and after contracted the effects while he still a Crown Prince in the Yuan Dynasty, he then transmitted this to the women with whom they had a night together.
After got exiled to Jeju, Seok-gi then married a civilian woman and had a son, but his family wasn't recorded too detailed in Goryeosa.