Keetje Wertheim was a daughter of Jonas Wertheim and Rebecka Levij. She married 27 September 1927 Isaac Deen from Zevenaar, son of Salomon Isaac Deen and Engeltje Vet. The couple had one son: Salomon. It seemed however that Keetje and Isaac did not live together at the same address since 1933 anymore and after the war this marriage has been dissolved by verdict of the District Court of Amsterdam on 23 August 1945 and registered there on 12 March 1946.
City Archive of Amsterdam, archive card of Keetje Wertheim, Jonas Wertheim and website www.wiewaswie.nl.
In addition, a Jokos file (number 38403) on this person is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.