Eva Koekoek and Joseph Bremer married in Amsterdam on 1 April 1908. The couple had seven children of which three survived the war. Their daughter Vrouke Bremer and sons Louis Bremer and Mozes Bremer had already left the parental house in April 1942.
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In addition, Jokos files (numbers 6174, 10805) on this family or other family members are at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.