However, the Seiwa-Genji of MINAMOTO no Yoshitada's line (the descendants of MINAMOTO no Yoshitaka (Sahyoegonza), MINAMOTO no Yoshikiyo (Sakyogonnodaibu) and Kawachi-Genji, the descendants of MINAMOTO no Yoshikatsu) carry Genji as thier surname and the documents published in the Edo period say that both their surname and hereditary title were Minamoto.
しかし、源義忠流清和源氏（源義高(左兵衛権佐)・源義清(左京権大夫)及び源義雄の子孫、河内源氏）は現在も、源を今日的な意味の姓としており、江戸時代の資料等にも苗字・姓とも源となっている。