She is the eldest daughter of His Highness Prince Yi Seok of Korea by his wife, Donkgo Jeonghui and a great-granddaughter of Emperor Gojong of the Korean Empire.
Yi Hong (이홍 i hong) (born 1974), the eldest daughter of Yi Seok.
Those who dispute the legitimacy of the adoption point out that consent for the adoption of Prince Won was not given by other members of Imperial House, including Prince Yi Seok, the younger half-brother of Prince Gap, and Princess Yi Hae-won, the eldest surviving member of the house.
Yi Seok | Lee Kang-seok | Kim Ji-seok |