MINAMOTO no Yoritomo, who became the head of samurai families as the first Seii Taishogun (commander-in-chief of the expeditionary force against the barbarians, great, unifying leader) of the Kamakura bakufu later, was Kawachi-Genji, therefore, the head of samurai families was chosen from Kawachi-Genji both in name and reality afterwards.
その後、鎌倉幕府の初代の征夷大将軍として武家棟梁となった源頼朝が河内源氏であったことから、河内源氏から名実ともに武家の棟梁が出ることとなった。