Jonathan Wilkinson was involved in the early silver plate trade.  In 1776, he registered a silver mark (‘I.W’) as a plate worker at Silver Street.  Little is known about his career and he never appeared in a Sheffield directory.  Broomhead, Wilkinson & Brittain included a Jonathan Wilkinson (who died on 23 November 1793), but whether he was the silversmith in Silver Street is unknown.  Interestingly, Hannah Wilkinson registered a silver mark (‘HW’) at Silver Street in 1792.  Perhaps she was Jonathan’s widow.  In 1793, Hannah registered another silver mark (‘HW & Co’) – this time with William Watson – in Silver Street.  But the enterprise was not listed in the Sheffield directory in 1797.  Hannah Wilkinson, ‘widow’, was buried at All Saints Parish Church, Ecclesall, on 12 July 1801.