Jacob de Leeuwe was married to Saartje Cohen. There were three children form a previous marriage who all survived the war.
Addition of a visitor of the website.
In addition, a Jokos file (number 55152) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.The Jokos file reveals that a claim was lodged for compensation for valuables surrendered to the Lippmann-Rosenthal looting bank (L-claim, number 2).