Will of John Janson or Johnson, Husbandman of Old Windsor, Berkshire 27 February 1685 PROB 11/379 

Will of Aaron Janson alias Johnson, late Mariner belonging to the Merchant Ship Edward and Dudley 10 May 1705 PROB 11/484 

Will of Henry Janson, Merchant of Battersea , Surrey 24 January 1785 PROB 11/1125 

Will of Humphrey Janson, Yeoman of Stourton, Warwickshire 11 March 1659 PROB 11/287 

Will of Edward Janson, Warehouseman of London 07 April 1813 PROB 11/1543 

Will of Thomasine or Thomazine Janson of London 18 February 1659 PROB 11/287 

Will of Boy Janson, now belonging to Their Majesty's Ship Archangel 11 June 1694 PROB 11/420 

Will of Mary Janson, Widow of Exhall, Warwickshire 22 May 1694 PROB 11/420 

Will of James Janson, Gentleman of Haughton , Durham 03 June 1809 PROB 11/1499 

Will of Andrews Janson Flink or Johanson Flinck, Mariner of Saint Paul Shadwell, Middlesex 04 June 1684 PROB 11/376