It is uncertain, however, what interests MINAMOTO no Yoshitomo and the Shimosa no kami FUJIWARA no Chikamichi, who compelled Tsuneshige to acquire a deed of the Soma-go village, had at that occasion, but Yasuo MOTOKI assumes that since the Shimosa no kami FUJIWARA no Chikamichi was in a position dependent of Sekkan-ke (the families which produced the regent and the chief adviser to the Emperor), he captured the mikuriya using the authority of his head master FUJIWARA no Tadazane.
ただ、このときの源義朝と、常重から相馬郷の新券（証文）を責め取った下総守藤原親通の利害関係はよく判らないが、元木泰雄は下総守藤原親通が摂関家に従属する位置にあったので、大殿・藤原忠実の権威を利用して押さえたと想定している。