In fact, it is suspected that the summer, in August, 1155, battle of Okura Warehouse in Musashi Province, in which MINAMOTO no Yoshihira (Yoshitomo's eldest son) destroyed his uncle MINAMOTO no Yoshikata, occurred with the approval and support of Nobuyori, the governor of Musashi.
久寿2年（1155年）8月に源義平（義朝の長男）が叔父の源義賢を滅ぼした武蔵国大蔵館合戦においても、武蔵守であった信頼の支援があったと推測される。