Moreover, since Takayasu MITSUI's eldest son Takaatsu (the torishimariyaku of Mitsui & Co., Ltd.) married Reiko, who was younger sister of Hachiroemon MITSUI, the tenth-generation Hokke, being the Mitsui Soryo-ke family and heir, the Keibatsu, Keibatsu blood connection between the Sumitomo and Mitsui families is not only a simple bond between one family and another family but is also a genuine connection directly connecting the Honke and Soryo-ke families and heirs.
しかも三井高泰の長男高篤（元三井物産取締役）は、三井総領家である北家十代の三井八郎右衛門（高棟）の妹礼子を妻にしているので、住友家と三井家の閨閥のつながりは、単に一族と一族との結合ではなく、本家と総領家が直接に結びついた本格的なものである。