Morioka Domain
The ancient county of in Mutsu Province was divided into the counties of Ninohe, Sannohe, Kunohe and Kita in 1634. Under the Tokugawa shogunate, Ninohe county consisted of 74 villages under the control of Morioka Domain. Following the Meiji restoration, Ninohe came under Aomori Prefecture from December 1871 to May 1876, when it became part of Iwate Prefecture.