Marcus de Haan was the son of Elias de Haan and Eva Slager. he was married to Marie Anna Renée Hoedemaker in 1929. She was the daughter of Henri Hoedemaker and Henriette Polak. The couple had two children: Elias and Henriette.
Stadsarchief (Municipal Archives) Amsterdam, file card of Marcus de Haan
In addition, a Jokos file (number 2794) on this household is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.