Todmorden is a market town in Calderdale, West Yorkshire, England. It underwent significant growth in the first half of the nineteenth century, with the construction of the Rochdale Canal in 1804 and multiple railways forming the “Todmorden Triangle,” which linked Todmorden in all three directions to Manchester, Leeds, and Burnley. The Fielden family of manufacturers was particularly influential in the town, as they established several mills and assorted buildings and brought about social and educational change; one son of the family, John Fielden (1784–1849), was an MP and the national leader of the Ten Hours Campaign for factory reform.