The Casson family lived in Walkley. James Casson was first listed in 1854 as a cutler and shopkeeper in Owlerton. In 1863 and 1868 James Casson & Sons advertised as a manufacturer of pen, pocket, and sportsman’s knives in Industry Street, Walkley. James’s two sons – William and James – appear to have taken over after their father’s death. He died on 30 October 1870, aged 69, leaving under £200. Also associated with the business was Thomas Ibbotson Ya....