He was the fifth Prince of Emperor Murakami, and his mother was Koi (secondary imperial consort) (court lady), FUJIWARA no Masahime (Sadaijin (Minister of the left), FUJIWARA no Arihira's daughter).
村上天皇の第5皇子で、母は更衣(女官)藤原正妃（まさひめ、左大臣藤原在衡の娘）。