It is said that TAIRA no Takamochi, who was the grandfather of TAIRA no Masakado, and others went to Kanto region to capture gangs of robbers in Bando during the period of 'Shieiden Managers,' but military aristocrats like them that came from capital had the main duty to settle the conflict between the governor and the lord of Shieiden.
その「私営田経営者」の時代に平将門の祖父・平高望らが関東に下向したのは板東群盗を押さえる為といわれるが、彼ら中央から下った軍事貴族は、国司と私営田領主の紛争解決の担い手としても位置づけられた。