His grandfather is Emperor Kanmu, father was the Imperial Prince Kazurahara, his wife was a daughter of FUJIWARA no Nagara, FUJIWARA no Ariko, and among his children were TAIRA no Sanenori (who was also called TAIRA no Saneo), TAIRA no Masanori, TAIRA no Korenori and TAIRA no Suenaga.
祖父は桓武天皇、父は葛原親王、妻は藤原長良の女、藤原有子、子に平実範（平実雄とも言われる）、平正範、平惟範、平季長らがいる。