His brothers are TAIRA no Narimoto (Taro YOSHIDA), TAIRA no Tadamoto (Yukikata clan), and his sister got married to MINAMOTO no Yoshinari (founder of the Satake clan) of the Hitachi-Genji clan.
兄弟に平盛幹（吉田太郎）、平忠幹（行方氏）らがおり、妹は、常陸源氏の源義業（佐竹氏の祖）に嫁いでいる。