Thereafter, he remained in Kyoto and he was appointed to Kinri Goshuei Sotoku (Head of the Imperial Palace/Emperor's Protector); together with the Protector (Shugoshoku) Katamori MATSUDAIRA (Aizu-han Clan) and Kyoto Shoshidai Sadaaki MATSUDAIRA (Chief of Kuwana-han Clan) regulated the nobles and those loyal to the Emperor (Ichi-Kai-So (Hitotsubashi-Aizu-Kuwana) structure).
以後は京都に留まり朝廷から禁裏御守衛総督に任じられ、守護職・松平容保（会津藩主）、所司代・松平定敬（桑名藩主）と共に勤皇の志士や公家の取り締まりにあたる（一会桑（一橋・会津・桑名）体制）。