Hence the commerce of this county is very extensive: the exports are linens, linen yarn, cotton goods, all kinds of grain, pork, bacon, hams, beef, butter, eggs, lard, potatoes,
soap, and candles;
from Lewis Topographical Dictionary, 1837... so looking for soap manufacturers in particular! which also follows through to OB & C
and a little on soap history around that timeframe... which might come in handy at some point

A major step toward large-scale commercial soapmaking occurred in 1791 when a French chemist, Nicholas Leblanc, patented a process for making soda ash, or sodium carbonate, from common salt. Soda ash is the alkali obtained from ashes that combines with fat to form soap. The Leblanc process yielded quantities of good quality, inexpensive soda ash.
The science of modern soapmaking was bom some 20 years later with the discovery by Michel Eugene Chevreul, another French chemist, of the chemical nature and relationship of fats, glycerine and fatty acids. His studies established the basis for both fat and soap chemistry.
Also important to the advancement of soap technology was the mid-1800s invention by the Belgian chemist, Ernest Solvay, of the ammonia process, which also used common table salt, or sodium chloride, to make soda ash. Solvay's process further reduced the cost of obtaining this alkali, and increased both the quality and quantity of the soda ash available for manufacturing soap.