Hachiro Saionji's third son, Fujio SAIONJI, married the eldest daughter of Yoshisuke AYUKAWA and became the president of Nissan Kogyo K.K., a subsidiary company of the Nissan Konzern Company Group.
なお西園寺八郎の三男・西園寺不二男は鮎川義介の長女を娶り、自らも日産コンツェルン傘下の日産興業社長に就いている。