The Saga-Genji name was passed on by the Toru Lineage of Saga-Genji, the descendants of MINAMOTO no Toru, who had become provincial warriors, and whose head was MINAMOTO no Tsuna, who was a son of MINAMOTO no Toru's great grandson, MINAMOTO no Atsuru (or Ataru) (also known as MITA no Atsuru or Ataru, MITA no Genji), who had come to Kanto as the Court's representative in Musashi Province, taking the name Mita-Genji and who became known for his one-on-one duel against TAIRA no Yoshifumi (Goro MURAOKA).
嵯峨源氏で後世に子孫を伝えたのは、源融の後裔で、地方に土着して武家となった系統（融流嵯峨源氏）であり、その代表が源融のひ孫で武蔵権介として関東に下り、箕田源次と名のり、平良文（村岡五郎）との一騎打ちで知られる源宛（箕田宛、箕田源次）の子の源綱。