RESEARCH Trade Directories
Trade Directories
These exist certainly from the late 1700's and in some cases even earlier.
They are often available on paid websites, but some are also freely available from sites such as University of Leicester Historical Directories.
Direct links to some volumes of interest for Cumbria are:
Cumberland, Westmorland and Furness. Parson and White 1829.
Cumberland and Westmorland. The Post Office Directory for 1873.
Westmorland. Post Office Directory for 1858.
But there are more directories, check them out from the main Historical Directories link given above.