Gyeon Hwon
In 935, Gyeon Hwon chose his fourth son Geumgang over the elder sons as the crown prince of Hubaekje. At this the eldest son, Singeom, conspiring with his brothers, had his father confined to Geumsansa in Gimje. Singeom killed Prince Geumgang and took the throne for himself. However, Gyeon Hwon escaped to Goryeo.