Snow Hill was historically the site of one of the City of London water conduits.

In London Labour and the London Poor edition: 

Phase 1

Statement of a Returned Convict. (Volume 3): "I saw Cashman hung for that gunsmith’s shop on Snow-hill, and I saw Fauntleroy hung, and a good many others, but it gave me no uneasiness and no fear. The gallows had no terror for people in my way of life."

Phase 2 

Of the Trades and Localities of the Street-Jews. (Volume 2)