Jozeph Frijda was married to Marianne Sluis. In June 1943, Marianne Sluis died, possibly while living in hiding. She was given a clandestine burial at the Jewish cemetery in Diemen.
Addition of a visitor of the website
In addition, a Jokos file (number 50228) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.