Her real mother was MINAMOTO no Toshiko who was "Kodono" (the most responsible person of all parishioners of Hatidai-jinja Shrine) & Tadamichi's wife & a person of Murakami-Genji (Minamoto clan) & the daughter of MINAMOTO no Akitoshi, a local "Zuryo" (the head of the provincial governors).
生母は忠通家女房、督殿源俊子（村上源氏、地方の受領源顕俊の女）。