 The victorious Meiji government reduced the domain to 50,700 "koku" under the final "daimyō" Niwa Nagahiro, who subsequently served as imperial governor until the abolition of the han system in 1871.In 1884, he became a viscount ("shishaku") under the kazoku peerage system.Another clan, the Isshiki-Niwa, who were "daimyō" of Mikusa Domain (10,000 "koku") in Harima Province from 1746 to 1871, bears the same Niwa but is not directly related to the above.