The daughter of KI no Yoshimitsu is known as the wife of Naritada, so if she had been Kishi's mother, she would have been descended from a noted scholar, KI no Haseo.
成忠室には紀淑光女が知られ、貴子はその所生だとすれば、名だたる学者・紀長谷雄の血をひくことになる。