There are several views about her real mother such as the mother was koi (nyokan, a lady waiting in the court) by "Teio Hennenki" (the Chronicle of emperors) or a kokyu (consort of the emperor) FUJIWARA no Konshi by "Honcho Koinjounroku" (the Emperor's family tree, made in the Muromachi period), therefore there is no generally accepted view.
彼女の生母については定説がなく、更衣(女官)紀静子とする説（『帝王編年記』）、後宮藤原今子とする説（『本朝皇胤紹運録』）などがある。