Meanwhile, in "Zoku-Gunsho-Ruiju" and the 'Nakahara keizu,' NAKAHARA no Hirosue was stated as being his real father and OE no Koremitsu was stated as his adaptive father, leaving the truth laregly unclear.
逆に『続群書類従』「中原系図」では中原広季は実父、大江維光は養父とされており、はっきりしたことは解らない。