Kasuga no Tsubone, a woman in the early Edo period who gained notoriety as a menoto (a woman providing breastfeeding to a highborn baby) of the third-generation Shogun of the Edo shogunate, Iemitsu TOKUGAWA, was also related to the Sanjonishi Family; she made an arrangement to become an adopted sister of Saneeda SANJONISHI, whereupon she served the Imperial Palace as a daughter of the Sanjonishi Family and was given the title of Tsubone.
江戸時代初期の女性で、江戸幕府3代征夷大将軍・徳川家光の乳母として有名な春日局も三条西家に縁のある人物で、三条西実条と猶妹の縁組をし、公卿である三条西家の息女として御所に参内し、局号を許された。