Seiwa-Genji, who enjoyed its fame as military Genji, originated in Kinai, or current Kansai region, spread to various regions, and then split up into Settu-Genji, Yamato-Genji and Kawachi-Genji after MINAMOTO no Mitsunaka, and MINAMOTO no Yoshiie (Taro Yoshiie HACHIMAN) of the Kawachi-Genji, who were based in Kawachi Province, was the mainstream of them, whose descendants flourished as samurai represented by MINAMOTO no Yoritomo, who established the Kamakura bakufu, and other clans such as Ishikawa-Genji, Kai-Genji, Hitachi-Genji, Shimotsuke-Genji (Ashikaga clan) and Kozuke-Genji (Nitta clan) were descended from Kawachi-Genji as well.
武家源氏として名を馳せた清和源氏においては畿内に始まり各地に土着しており、源満仲の子から摂津源氏、大和源氏、河内源氏とに分かれ、河内国を本拠地とした河内源氏の源義家（八幡太郎義家）はその主流で、その子孫は鎌倉幕府を開いた源頼朝に代表される武士として栄え、さらに河内源氏からは石川源氏、甲斐源氏、常陸源氏、下野源氏（足利氏）、上野源氏（新田氏）などが分派している。