When he ascended the throne as Emperor Tsuchimikado in 1198, Noen became the maternal grandfather of an emperor by blood relationship, but he never received treatment befitting that fact.
同親王は建久9年（1198年）に土御門天皇として即位し、能円は血縁上は天皇の外祖父となったが、それに相応しい厚遇を受けることはなかった。