Although his grandfather FUJIWARA no Tadatoshi, died young at the age of 46, and his natural father, Kanehira and his brother, Tsunemichi, were not endowed with longevity, he could enjoy a long lifespan, as did his foster-father, Sanesuke.
祖父藤原斉敏は46歳と短命であり、実父懐平や兄の経通も長寿ではなかったが、養父実資と同様に長寿であった。