Shimazu clan
During the downfall of the Kamakura shogunate, Shimazu Sadahisa successfully sided with Ashikaga Takauji. In reward for his service, the Shimazu clan won back the "jitō" of the Shimazu Estate "in Ōsumi" and the military governor of Ōsumi and Hyūga Provinces. Because the military government and the estate in Ōsumi remained distinct entities, the Shimazu clan had much trouble regaining control over the province.