Ogasawara

The Ogasawara were a warrior family descended from the Kai Minamoto, named after their home in Kai Province. They served as governors of Awa in the Kamakura period and Shinano under the Muromachi shogunate.

Ogasawara Nagatoki fought Takeda Harunobu's invasion of Shinano, but was defeated at Shiojiritoge in 1548 and lost his base at Hayashi Castle in 1550. Ogasawara branches later became hereditary daimyo of five domains, including Kokura, under the Tokugawa shogunate.