Her father was Chisokuin Chancellor FUJIWARA no Tadazane, her mother was Udaijin (Minister of the right), Minamoto no Akifusa's daughter, Juichii (Junior First Rank), MINAMOTO no Shishi, also pronounced Moroko.
父は知足院関白・藤原忠実、母は右大臣源顕房の女・従一位源師子。