Henriette de Leon, daugher of Salomon de Leon and Heintje Jas, married 3 September 1919 in Amsterdam Benjamin van Kleef, a son of Hartog van Kleef and Judith Noot. She had two daughters: Judith and Hendrika. Only the latter has survived the Holocaust.
City Archive of Amsteram, archive cards of Henriette de Leon and Benjamin van Kleef.