He originated from the Koichijo line of the Northern House of the Fujiwara clan; his descendants were the Koichijo family and the Anegakoji family of Hida Province Kokushi (provincial governor) as a branch family of the Koichijo family.
藤原北家小一条流の祖で、子孫に小一条家、その庶流の飛騨国国司姉小路家がある。