Nathan Brander was a messenger before the war.
Addition of a visitor of the website
Nathan Brander is listed in the Sterbebücher von Auschwitz. According to these records he died at 23 September 1942.
See also the website of the Museum Auschwitz-Birkenau.
This person is commemorated on a memorial in Amsterdam. More information on this memorial can be found (in Dutch) on the website of the Nationaal Comité 4 en 5 mei.