MINAMOTO no Mamoru of Hitachi Daijo clan, who expanded his forces in Kanto and who was a key figure in the Rebellion by TAIRA no Masakado, and his kin are also said to be of the Saga-Genji and of the same lineage as MINAMOTO no Ataru (Ataru TADA), who was a gonnosuke in Musashi.
また関東に勢力を張り、平将門の乱においても重要な存在となる常陸大掾の源護とその一族もまた武蔵権介の源宛（箕田宛）と同族の嵯峨源氏であろうとされている。