Meanwhile, Tsutomu SUMITOMO's younger sister Fumiko married Yoshio MIWA, president of the former Mitsuwa Soap Corporation, and Yoshio's younger sister Satoko married Saheiji MOGI, the tenth president of the former Kikkoman Corporation.
また、住友務の妹文子は、元ミツワ石鹸社長の三輪善雄に嫁いでいるが、善雄の妹の佐登子は、元キッコーマン醤油10代社長茂木佐平治に嫁いでいる。