Naatje Lisser was a daughter of David Lisser and Rosa de Hond. 3 December 1919 she married Philip de Beer in Amsterdam, a son of Leendert de Beer and Sara Lisser. 19 June 1920 their daughter Sara was born there.
23 September 1929 the family moved from Amsterdam to Den Haag, were they first were registered at the address Tamarindestraat 56 2nd floor; in 1934 they moved to Galileistraat 84 and per 21 August 1936 to Daguerrestraat 181.
28 November 1942 the family was deported from Den Haag to Westerbork and 8 December put on transport to Auschwitz. This transport included 927 deportees and stopped at Kozel, about 80 km West from Auschwitz, were 60 men between 15 and 50 years of age were forced to leave the train, to be used as forced laborers in the surrounding satellite camps of Auschwitz. It is not unlikely that Philip de Beer – then 41 years of age - belonged to that group of 60 men; his date of death was established as 28 February 1943, “perished in the Auschwitz region”.
Those, who in Kozel remained in the train, were transported further to Auschwitz and on arrival there 11 December 1942 Naatje de Beer-Lisser and her daughter Saartje de Beer have been killed immediately.
City Archive of Amsterdam, archive card of David Lisser; Municipal Archive of Den Haag, family registration card of Philip de Beer; list of Jew-transports from the Netherlands, Wikipedia and the file cabinet of the Jewish Council, registration cards of Philip de Beer, Naatje de Beer-Lisser and Sara de Beer.