Mogami clan
Much of Dewa Province was controlled by the powerful Mogami clan during the Sengoku period. The Mogami established a subsidiary holding centered on Sakanobe Castle in what is now Mamurogawa in Yamagata, based on the Sengoku-period foundations of a structure erected by the Onodera clan. However, the Mogami were dispossessed by the Tokugawa shogunate in 1622, with the majority of their holdings going to the Satake clan, who were transferred from Hitachi Province to their new (and much smaller) holdings at Kubota Domain.