Following the death of her cousin Yi Ku on 16 July 2005, members of the imperial family chose his adopted son, Yi Won, as the next Head of the Korean Imperial Household, bestowing on him the title, the Hereditary Prince Imperial of Korea (Hwangsason), representative of an inherited title from Yi Ku.
After the death of Yi Ku on July 16, 2005, members of the royal family chose Yi Won, his adopted son, to be the next Head of the Korean Imperial Household and bestowed upon him the title "Hereditary Prince Imperial of Korea" (Hwangsason), a position passed down from Yi Ku.