Masayuki, under the support of Soryo (heir of the head family) Masatoyo YAMANA, drove away the branches of the Shugo family like Motoyuki and his backing forces into Mimasaka Province, and cleaned up the Motoyuki group that had remained in Hoki Province, and then he assumed the post of Shugo.
政之は惣領の山名政豊支援の下、元之ら守護家傍流とその支持勢力を美作国へ追い落とし、伯耆国内に残っていた元之党を掃討して守護職に就任した。