Major johann Armin
The name Wertz can be German, Jewish or German-Jewish.
Armin M. Brandt has written: 'Bau deinen Altar auf fremder Erde' -- subject(s): German Americans, History
Yes, just as there are people of French Jewish and Russian Jewish descent. A term like German Jewish descent implies that the ancestors were Jewish and were from German cultural regions in Europe.
Stone comes from Stein which is German and means stone. It can be German or German-Jewish. Many Jewish names are German words or come from German words. Schwartz, for example, means black in German.
german
It is of German origin, but it may be a Jewish name.
Armin Mueller-Stahl has written: 'Kettenkarussell' 'Verordneter Sonntag' 'Armin Mueller-Stahl' -- subject(s): Exhibitions 'In Gedanken an Marie- Louise. Eine Liebesgeschichte' 'Drehtage' -- subject(s): Actors, Diaries, German Authors
Wasserburger can be a German Jewish name, but like all German Jewish names, it can be used by both Jews and non-Jews.
Yes, it is either of Jewish or German origin.
No, she was not Jewish.
It could be both - Jewish names and German names are often similar and it could be that your ancestors were both Jewish and German (Jews living in Germany).