This person is commemorated on a memorial in Hoogeveen. More information on this memorial can be found (in Dutch) on the website of the Nationaal Comité 4 en 5 mei.
Barend Stern and Ida Wolf had a son Emanuel Barend. Stadsarchief Amsterdam, archiefkaart Emanuel Barend Stern
In addition, a Jokos file (number 54227) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.