The details of his mother are unknown, although it is said that she was the daughter of Iyo no kuni no Kami (governor of Iyo Province) FUJIWARA no Kuniaki or 'the daughter of Tameie ASOMI/ ASON.'
母は伊予国守藤原国明の女、あるいは「為家朝臣女」とされるが不詳。