In addition, Ujimasa returned Gion-jo Castle of Shimotsuke Province to the former castle lord, Hidetsuna OYAMA, with the mediation by Kazumasu TAKIGAWA, to realize the controlling of the Kanto region by the Oda clan.
また滝川一益の仲介により、下野祇園城を元城主の小山秀綱に返還する等、織田氏の関東支配に協力している。