John Sorby (1755-1829) was Master Cutler in 1806 (the first Master Cutler in the family since 1669). His Spital Hill business, apparently launched in 1780, made edge tools and shears. He may have partnered his brother, Thomas, in Sorby, Hobson & Sorby. By the 1820s, John Sorby & Sons was a merchant, selling a variety of products that included trade knives, such as those for butchers and cooks. The company exported trade knives or dags (short, flat daggers) to American frontiersmen and Native A....