In 1150, Yorinaga took command of MINAMOTO no Tameyoshi's and MINAMOTO no Yorikata's troops, attacked Tadamichi's villa, and made off with the head clansman's seal and family treasures; Tadazane took them to the Sekkan regent family's Higashi-Sanjodono estate and handed them over to Yorinaga.
1150年、頼長は源為義・源頼賢の兵を率いて忠通の別邸を襲って氏長者の印たる朱器台盤を奪い、これらを忠実は摂関家ゆかりの東三条殿ともに頼長に渡した。