Devonshire is a small town that holds the Barton Park estate owned by Sir John Middleton. This estate also holds Barton Cottage, where the Dashwoods reside when they move out of Norland Park. In Sense and Sensibility, Austen describes the picturesque landscape as "a pleasent fertile spot, well wooded, and rich in pasture" (65). 

Austen, Jane. Sense and Sensibility, edited by Kathleen Viola James-Cavan, Broadview Press, 2001.