An island of volcanos that was risen by the Demon Lord Tagrok
Devonshire was not raised by the Council of Ten but by demon lord, Tagrok. He was revolting against the Seven Gods saying they are not the only ones who can create. Sadly, He created an island of volcanos, but the Dragonborn took to it and started to worship Tagrok.
The current leader of Devonshire is religious zealot Timbac Wulhadur. He follows Tagrok's teachings which is to push away the Seven Gods, calling them conceited and lost. He has raised an army of ships and He has many fellow worshipers which drive his end goals.