Which region in England is noted for the origin of the Jack Russell?

The Jack Russell Terrier originated in the region of Devon, England, specifically associated with the work of Reverend John Russell in the 19th century. He developed this breed primarily for fox hunting. The terrain and specific needs of the hunting practices in Devon contributed to the development of the breed's characteristics, such as their agility and tenacity. The region’s hunting culture and requirements strongly influenced the standards that define the Jack Russell Terrier today, making it integral to the breed’s history and development.