The eldest daughter of Tokuro IWASE married Kenzaburo, who was adopted by the eleventh-generation Shichi-zaemon MOGI, a member of the Kikkoman (Corporation) family.
岩瀬徳郎の長女は、キッコーマン醤油一族である11代茂木七左衛門の養子賢三郎に嫁いでいる。