FUJIWARA no Kiyotsuna (Gonjuro WATARI), the fourth son of Kiyohira, resided in Nakajima Yakata (a castle) in Watari County at first and later relocated to Hiraizumi.
清衡の四男・藤原清綱（亘理権十郎）は当初亘理郡中嶋舘に居城し以後平泉へ移る。