Therefore, considering the relationship with Meryo (the section taking care of imperial horses) which was one of the military officers in Kyoto, the fact that 'Maki' had been a base of samurai groups since the age of TAIRA no Masakado who lived before Yoshiie, and the fact that Oshu was a production area of good horses, it can be guessed naturally that he had a relationship with the Mutsu Province and it is reasonable enough to think that he approached Yoshiie who was Mutsuno kami and a military aristocracy.
そこから京の武官の一部を構成する馬寮とのつながり、義家以前の平将門の時代から「牧」は武士団のベースであること、そして奥州は良馬の産地であり、義家以前からの陸奥とのつながりも当然想定され、陸奥守であり、また軍事貴族である義家への接近は十分に考えられる。