In fact, through the deaths of these two he had reached the highest court rank at the age of just 35, retaining that rank for 35 years until he passed away; moreover, due to his longevity (considered impressive for the time) Tadahira and his descendants became the direct line of descent in place of Tokihira and succeeded to the posts of regent and chancellor until the beginning of the Meiji period.
実際前述の2人の死により、早くも35歳にして臣下最高位となり、死去するまで35年間その地位を維持したが、当時としては長寿を全うした事で忠平とその子孫は時平に代わって嫡流となり、摂関職を明治時代開幕まで継承することとなった。