Marcus Spanjer was a son of Levie Spanjer and Rebekka Groenheim. He married in Amsterdam on 3 March 1926 to Elisabeth Brandon.
City Archive of Amsterdam, archive card of Rebekka Groenheim and Genlias.
In addition, a Jokos file (number 35366) 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 …