And the reason why Sanesuke, although called 'Kenjin Ufu' (Wise Right Ministry), was not included in Shinagon, was that he was in a position that might threaten the power and influence of Michinaga, because Sanesuke was a person of wisdom with a vast knowledge of Yusoku kojitsu (court and samurai rules of ceremony and etiquettes) and, moreover, a legitimate son of the Ononomiya family line.
反対に「賢人右府」と呼ばれた実資がこの賢者の代表とされる四納言に含まれないのは、彼が右大臣に昇ったこともあるが、実資は有職故実に通じた賢人でかつ小野宮流の嫡流であったことから、道長の権勢に対抗することが可能な状況にあったところが大きい。