King Gyeongsun
Last king of Silla, who surrendered the kingdom to Goryeo in 935 and was made sasimgwan of Gyeongju
He was put on the throne by Gyeon Hwon after the sack of Gyeongju and the death of King Gyeongae in 927. With Silla reduced to the area around Gyeongju, he decided to submit to Goryeo. Crown Prince Maui protested that a thousand-year kingdom could not be handed over in a day and, overruled, is said to have gone into the Diamond Mountains. Wang Geon gave him the rank of chief minister and married him to his eldest daughter, Princess Nangnang. His appointment as sasimgwan of Gyeongju marked the start of the sasimgwan system.