Ōuetsu Reppan Dōmei in the context of "Satake clan"

The Nanbu clan (南部氏, Nanbu-shi) was a Japanese samurai clan who ruled most of northeastern Honshū in the Tōhoku region of Japan for over 700 years, from the Kamakura period through the Meiji Restoration of 1868. The Nanbu claimed descent from the Seiwa Genji of Kai Province and were thus related to the Takeda clan. The clan moved its seat from Kai to Mutsu Province in the early Muromachi period, and were confirmed as daimyō of Morioka Domain under the Edo-period Tokugawa shogunate. The domain was in constant conflict with neighboring Hirosaki Domain, whose ruling Tsugaru clan were once Nanbu retainers.

During the Boshin War of 1868–69, the Nanbu clan fought on the side of the Ōuetsu Reppan Dōmei, supporting the Tokugawa regime. After the Meiji Restoration, the Nanbu clan had much of its land confiscated, and in 1871, the heads of its branches were relieved of office. In the Meiji period, the former daimyō became part of the kazoku peerage, with Nanbu Toshiyuki receiving the title of hakushaku (count). The main Nanbu line survives to the present day; Toshiaki Nanbu served as the chief priest of Yasukuni Shrine.

The Tsugaru clan (Japanese: 津軽氏, Hepburn: Tsugaru-shi) was a Japanese samurai clan who ruled the northwestern half of what is now Aomori Prefecture in the Tōhoku region of Japan under the Edo period Tokugawa shogunate. The Tsugaru were daimyō of Hirosaki Domain and its semi-subsidiary, Kuroishi Domain. The Tsugaru were in constant conflict with their former overlords, the Nanbu clan of adjoining Morioka Domain. During the Boshin War of 1868-69, the Tsugaru clan fought mostly on the pro-imperial side, although it did briefly join the Ōuetsu Reppan Dōmei. In the Meiji period, the official status of the daimyō was abolished. The former daimyō, including the Tsugaru, became part of the kazoku peerage instead, with Tsugaru Tsuguakira receiving the title of hakushaku (Count).