The third son, MINAMOTO no Yoshimoto became Ishikawa-Genji in Kawachi Province, and Ishikawa-Genji became the origin of such clans as the Ishikawa of MINAMOTO no Yoshikane, the eldest son of Yoshimoto, the Kondo of MINAMOTO no Yoshihiro (the founder of the clan), the fourth son of Yoshitoki, the Nijo of MINAMOTO no Yoshisuke, the Manriki of MINAMOTO no Nobumori, and the Kumata of MINAMOTO no Ariyoshi.
三男源義基は河内国石川源氏となり、義基の嫡男源義兼の石川氏をはじめ、石川源氏からは義時の四男源義広(紺戸氏祖)の紺戸氏・源義資の二条氏・源信盛の万力氏・源有義の杭全氏などを出した。