In addition, among the descendants of MINAMOTO no Hikaru was MINAMOTO no Atsushi, who was the father of the wife of MINAMOTO no Mitsunaka of Seiwa-Genji and also foster father of MINAMOTO no Tsuna (WATANABE no Tsuna) of Saga-Genji.
また、源光の子孫に、清和源氏の源満仲の妻の父であり、嵯峨源氏の源綱（渡辺綱）の養父である源敦がいる。