Cornelia Johanna Sara Wertheim was the wife of Lodewijk Ernst Visser. She died in Westerbork. She was buried in the Jewish cemetery in Overveen.
Slachtofferregister Oologsgravenstichting: www.ogs.nl
Cornelia Johanna Wertheim, widow of Lodewijk Ernst Visser, died on 20 March 1944 in Westerbork transit camp and she was cremated on 24 March 1944. The urn with her ashes was placed on the cemetry in Overveen next to the grave of her husband and of her daughter.
Register van joden die in het kamp Westerbork zijn gecremeerd, 1943-1944; archief van de gemeente Westerbork, opgenomen in het archief van de gemeente Midden-Drenthe te Beilen, inv. n 3789