Because her mother was the younger sister of Princess Takahime, the legal wife of Kanpaku (the chief advisor to the emperor) FUJIWARA no Yorimichi, she became the adopted daughter of the Yorimichi couple who had no daughters.
母が関白藤原頼通の正室隆姫女王の妹であった縁で、娘のない頼通夫妻の養女となる。