After the death of Sugen-in (another name for Iemitsu's mother Eyo), Kasuga no Tsubone exerted herself to the utmost to find consorts for him, convincing a succession of women including Eikoin, the abbess of Keiko-in Temple in Ise Province, as well as Hojuin and Junshoin, to enter the O-oku.
崇源院の死後は家光の側室探しに尽力し、伊勢国慶光院の院主であった永光院や、宝樹院、順性院などの女性たちを次々と奥入りさせた。