Leonard Cohen was married to Fransje Cohen. The couple lived at 17a Amsterdamse Veerkade in The Hague. From a previous marriage to Bertha Lautmann, Leonard had two sons Siegfried and Eduard. With Fransje Cohen, he had two daughters.
Amsterdam municipal archive, Records Jokos, Möbel-claim 7324, property Joods Maatschappelijk Werk; The Hague Municipal Archive, familyrecord Leonard Cohen
In addition, a Jokos file (number 7324) on this family is available at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.