Also, the relationship between Yoshikuni and his uncle, Yoshimitsu, who was expanding his sphere of influence in Hitachi Province in Kanto, was so bad that they fought against each other (some believe that Yoshitada and Yoshikuni had an alliance against their uncle, Yoshimitsu).
また関東で常陸から勢力を広げる叔父義光と合戦に及ぶなど、義光との仲は険悪であった（義忠と義国は連合して叔父義光に対抗していたとする説もある）。