Kichizaemon Tomonari SUMITOMO married Haruko, a second daughter of the duke Hachiro SAIONJI, the former Togu-shoku Goyo-gakari (Kinmochi SAIONJI's daughter's husband, the eighth son of the duke Motonori MORI, a feudal lord of old Nagato-no-kuni, of the Domain of Yamaguchi (Domain of Choshu)).
住友吉左衛門友成は元東宮職御用掛の公爵西園寺八郎（西園寺公望の女婿・旧長門国山口藩（長州藩）藩主・公爵毛利元徳の8男）の次女・春子と結婚した。