Nikkō Tōshō-gū
In June 1869, the title of "daimyō" was abolished, and he was appointed domain governor. However, in 1871, Shimabara domain itself was abolished with the abolition of the han system, and became part of the new Nagasaki Prefecture. Tadakazu relocated to Tokyo. He later served as chief priest of Nikkō Tōshō-gū in the Meiji period; he was also created viscount ("shishaku") under the "kazoku" peerage system.