Because his older brother, Tadanobu, was Gon Dainagon and his younger sisters were married to Emperors and Shogun, he was an influential person in the Chotei (Imperial Court).
兄の忠信は権大納言であり、妹たちがいずれも天皇・将軍に嫁いでいたことから当時の朝廷の有力者であった。