In nearly a half-century of missionary work throughout England, Wales, Scotland and Ireland, brothers John and Charles Wesley found the southwestern county of Cornwall to be among their most serious theological and social challenges. Eighteenth-century Cornwall lacked population centers, and small towns and villages were isolated by inadequate roads. The adult population consisted mainly of miners, fisherman and smugglers--men more interested in the bulk of their pocketbooks than in the status of their souls. And the clergy of the Church of England overwhelmingly opposed the Wesleys and their...