His second daughter, Mineko got married to the second son of OKUBO, Nobuaki MAKINO (whose daughter, Yukiko got married to Shigeru YOSHIDA and therefore Taro ASO is MAKINO's great-great-great-grandchild).
二女峰子は大久保の次男牧野伸顕に嫁いだ（牧野伸顕の娘雪子は吉田茂に嫁いでおり、従って麻生太郎は来孫にあたる）。