MINAMOTO no Yorinobu, the third son of MINAMOTO no Mitsunaka, is regarded as the founder who formed the samurai group of Seiwa-Genji in Tada, Kawabe-gun, Settsu Province (Tada, Kawanishi City, Hyogo Prefecture).
清和源氏の武士団を摂津国川辺郡多田(兵庫県川西市多田)に最初に形成した源満仲の三男の源頼信を祖とする。