Will of Robert Janson, Fishmonger of Gainsborough, Lincolnshire 08 May 1613 PROB 11/121 

Will of Lancelott Janson, Clerk of Heybridge, Essex 28 September 1624 PROB 11/144 

Will of James Janson of Saint Gregory, City of London 25 January 1585 PROB 11/68 

Will of Jan Janson alias John Johnson, Mariner of Saint Botolphs without Aldgate, Middlesex 02 November 1697 PROB 11/441 

Will of Clement Janson of Cranborne, Dorset 12 February 1573 PROB 11/55 

Will of Robert Janson of Hooe, Sussex 20 May 1568 PROB 11/50 

Will of Mary Janson of All Hallows the Great, City of London 19 February 1802 PROB 11/1370 

Will of Cuthbert Jamessons or Janson, Mariner of Saint Paul Shadwell, Middlesex 21 August 1701 PROB 11/461 

Will of Thomas Janson, Oatmeal Man of Leatherhead, Surrey 20 September 1658 PROB 11/282 

Will of Paul Janson or Jansson, Mariner of Saint John Wapping , Middlesex 02 April 1707 PROB 11/493