However, thanks to the enthronement of her son, Emperor Daigo, Takafuji was promoted to Naidaijin, her brother Sadakata was promoted to Udaijin and since then, her family was called Kanjuji line of the Northern House of the Fujiwara clan.
しかし、所生の醍醐天皇が即位したことによって高藤は内大臣にまで昇進、胤子の兄弟定方も右大臣となり、同家は以後藤原北家勧修寺流と称されることになった。