When the son of Mamoru, MINAMOTO no Tasuku and others fought against his nephew, TAIRA no Masakado, and Tasuku and his brothers were killed as well as TAIRA no Kunika, TAIRA no Yoshikane, who was the head of the Taira clan as well as Assistant governor of Kazusa Province after the death of his father Takamochi, did not interfere with this, while Yoshimasa did not hesitate to back up the Minamoto clan not Masakado from his own Taira clan, and fought against Masakado.
護の子源扶らと甥の平将門が争い、扶ら兄弟が討ち死し兄の平国香が巻き込まれ亡くなった際、父高望亡き後上総国介を次ぎ一族の長であった平良兼は不介入であったが、良正は一族の将門ではなく外縁の源氏に真っ先に加勢して将門と争った。