He was the second son of his biological father, a lesser councilor of state (Hisangi - advisor at large - Shosanmi or Senior Third Rank), Nobukata KIYOHARA (known as Nobukata FUNABASHI, the third son of Hisangi Kanetomo YOSHIDA).
実は、少納言（非参議正三位）・清原宣賢（別名：船橋宣賢、非参議・吉田兼倶の三男）の次男。