Joseph August Jean Polak and Roza Presser were the parents of Frans Alexander Polak.
Frans Alexander Polak died on 20 November 1943 in Westerbork transit camp and he was cremated on 24 November 1943. The urn with his ashes was placed on the Jewish cemetry in Diemen on field U, row 13, grave nr. 22.
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