This person is commemorated on a memorial in Harderwijk. More information on this memorial can be found (in Dutch) on the website of the Nationaal Comité 4 en 5 mei.
The mayor of Harderwijk requested that Hartog Zwart, merchant, his wife Wilhelmina Zwart-Kretschmann, housewife, and their daughter Aaltje Wilhelmina Zwart, be located, detained and brought to trial. They had been living in Harderwijk and were suspected of having changed their place of residence without the required authorization. This description referred to Jews who had gone into hiding. Algeme…