See for the history of leather factory "De Amstel" of the Gompen family: S. ter Braake and P. van Trigt, Leerhandelaar, looier, lederfabrikant. Het succes van Joodse ondernemers in de Nederlandse lederindustrie (1870-1940) Menasseh ben Israel Studies III (Amsterdam 2010) 62-69.
Siegfried Eduard Gompen had another child that lived at a different address and survived the war.
Addition of a visitor of the website
For additional information about the child that lived outside of Amsterdam: Jack Didden, ‘De laatste Joden in Waalwijk’, in: M. van Loon e.a. (red.), Geschiedenis v…