Jeannette Oesterman was a daughter of Meijer Oesterman and Rebecca van Coeverden. She married Nathan Koster in 1917 in Zaandam. She remarried on 19 August 1942 to 489472.
Stadsarchief Amsterdam, archiefkaart Jeannette Oesterman
In addition, a Jokos file (number 35653) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.
Nathan Koster and Jeannette Oesterman married in 1917 in Zaandam. They had three children, of whom one did not live at home anymore when the war broke out.
Stadsarchief Amsterdam, archiefkaart Nathan Koster