Gerrit Hamburger was a religious instructor for the Jewish community in Aalten from 1928 until 1936.
P. Lurvink, De joodse gemeente in Aalten. Een geschiedenis 1630-1945 (Zutphen 1991) 63, 193
This person is commemorated on a memorial in Roermond. More information on this memorial can be found (in Dutch) on the website of the Nationaal Comité 4 en 5 mei.