(Tsuneaki AKASAKA) It assumed that MINAMOTO no Tsunetada, whose name appeared in Oujinojaku fusei jiken (the case of unauthorized use of the family name 'O') of 953 cited in "Gonki" (FUJIWARA no Yukinari's diary) and was charged in representing himself as the descendant of Emperor Yozei (he was actually the descendant of Emperor Seiwa), was Tsunemoto or his brother, and interpreted that Yorinobu attempted to retrieve his honor by insisting in a petition that he was in fact the descendant of Emperor Yozei.
（赤坂恒明氏）　『権記』に引用されている天暦七年の王氏爵不正事件に現れる、清和天皇の子孫でありながら陽成天皇子孫を詐称したとして罰せられた源経忠を経基あるいはその兄弟と推定し、頼信が願文で陽成天皇の子孫であることは真実であると主張して名誉回復を図ったと解釈する。