It is said that his father was KOSHI no Saichi, who was a member of Kawachi no Fumi clan, descendents of those who had come from Kudara (Baekje; one of three kingdoms in the southern Korean Peninsula in Ancient periods).
父は百済系渡来人氏族の末裔西文氏（かわちのあやし）一族の高志才智とされる。