Jacques Erwteman was a son of Simon Erwteman and Raatje Stodel. He married 8 March 1939 in Amsterdam to Marianna Erwteman-Erwteman.
Jacques had a sister Maria who was killed with her family during the Holocaust too.
City Archive of Amsterdam, archive card of Jacques van de Kar, Soesman van de Kar and websitw www.wiewaswie.nl.