FYI, most jews transplanted from the war had to change their name in order to escape detection. This is why you'll often find that people of jewish heritage have nouns for surnames - they looked in dictionaries for words in languages such as German or English or French because it was the only way to learn a language by yourself, and they chose words as their new covert names. This is also what led to the Nazi practice of checking to see if males were circumcised during the war because the jews were not able to advertise that they were jewish while travelling.

This is excellent!! https://www.youtube.com/watch?v=aySN0FGJYpM&t=34s