Ogasawara clan
During the Sengoku period, Matsumoto was the seat of the Ogasawara clan, the "shugo" of Shinano Province. However, Ogasawara clan was defeated by Takeda Shingen in a series of battles from 1542 to 1548, and his lands became part of the Takeda clan territories. After the fall of the Takeda clan, the area became a disputed region, eventually coming under the control of Tokugawa Ieyasu, who placed Ogasawara Hidemasa in charge of Matsumoto.