Dewa Province

is an old province of Japan in the area of Yamagata Prefecture and Akita Prefecture on the island of Honshū. It was sometimes called .
History.
In 708, Dewa"-no kuni" was separated from Echigo. 
In 712, Dewa and Mutsu Province were reorganized 
Shiba Kaneyori received the Dewa Province as a fief from Ashikaga Takauji in 1335.
In the Meiji period, the provinces of Japan were converted into prefectures. The maps of Japan and Dewa Province were reformed in the 1870s.
Shrines and Temples.
"Ōmonoimi jinja" was the chief Shinto shrine ("ichinomiya") of Dewa.