Being a branch of Kanmu-Heishi (Taira clan), his grandfather was said to be TAIRA no Sadamitsu or TAIRA no Norisue, and his father was said to be TAIRA no Iefusa (Suefusa) or TAIRA no Norisue.
桓武平氏の傍流であるが祖父は平貞光・平範季、父は平家房（季房）・平範季と諸説ある。