Berthold Krebs lived in Berlin prior to emigrating to Holland in the 1930s. According to the Auschwitz Forced Labor records at ancestry.com and his Mauthausen prisoner card, he was a dentist. His parents were Willy Krebs and Anna Krebs-Heilfrom. Berthold was deported on 18.02.1943 to Auschwitz and on 25.01.1945 to Mauthausen, where he survived the war but died from the effects of the concentration camps.
I would appreciate any information concerning his time in Berlin and the identity of his parents.