The Patterdale Terrier originated in the Lake District, U.K. Local terrier types were bred for the purposes of hunting red fox in the rocky fells where digging was difficult at best, and more often impossible. Much has already been written in regard to the history of the Patterdale Terrier. As a novice Terrier Man, I have nothing to add. The Wikipedia page for the Patterdale Terrier is a good brief synopsis, and a jumping off point for further research if your interest stirs. There are also many books written on the type. (See link below).
One fine point I’d like to point out; the Patterdale Terrier was then, and is now a type versus a breed. It is a working terrier used throughout the world on varied quarry. Different terrain and quarry determine hunting styles, and dog sizes, hence the range found within the type. In order to standardize things more within the type, one would have to breed for confirmation as opposed to working ability. Breeding for confirmation often leads to the destruction of working breeds.
Rocky outcrops of the Fells in the Lake District, U.K.