Natalie, Sharon, and many others: Here are several research sources for those with German or Jewish sounding surnames: (They're only a start.)
www.avotaynu.com/books/MenkNames.htm
Surnames in Dictionary of German-Jewish Surnames. Aach • Aal • Aale • Aaron • Aaronheim • Aarons • Aaronsohn • Abarbanel • Abarbanel Sousa • Abarbanell ...
www.slate.com/.../ashkenazi_names_the_etymology_of_the_most_common_jewish_s...
Jan 8, 2014 - Ashkenazic Jews were among the last Europeans to take family names. Some German-speaking Jews took last names as early as the 17th ...
https://en.wikipedia.org/wiki/Category:Jewish_surnames
Pages in category "Jewish surnames". The following 200 pages are in this category, out of 1,272 total. This list may not reflect recent changes (learn more).
https://en.wikipedia.org/wiki/Jewish_surname
But there are others that are more distinctively Jewish: Parnass, Gabbay, Singer, Cantor, Voorsanger, Chazan, Cantarini, from the synagogue officials who were so called; Shochet, Schaechter, Schechter, from the ritual slaughterer (also Schub or Shub: Hebrew acronym for 'shochet u-bodek'/ritual slaughterer and kosher ...
Ashkenazic Jewry · In Israel · Toponyms (names ... · Official names and ...