In addition, Toshinari (Sadaie's father) lost his father in early childhood and worked as zuryo (provincial governor dispatched to a particular province) of some provinces for a certain period as the adopted son of FUJIWARA no Akiyori (the Hamuro family).
更に父・俊成は幼くして父を失って一時期藤原顕頼（葉室家）の養子となって諸国の受領を務めていた。