In the April 27, 1174 section of "Kikki" (a diary by Tsunefusa YOSHIDA), there is a description that says "It is a picture of the war against people in the province such as Takehira and Iehira when Yoshiie Ason was Mutsu no kami."
それを記した吉田経房の日記『吉記』承安4年（1174年)3月17日条には、「義家朝臣為陸奥守之時、興彼国住人武衡家衡等合戦絵也」とある。