My Adlers (my great grandmother Bertha Bühler was born Bertha Adler) were from Baden Württemberg, but my Bühlers were from Bavaria.But who knows if someone was from there. Fanny Bühler Gutmann also had about 16 children.She was a sister of my great great grandfather Jakob. Because she had so many children, most Bühlers/Buehlers I find are related to her. How did you grandfather identify as Jewish? Bertha must have come from a Jewish family. I guess you know her parents' names.?? My email is email@example.com
. If you find more information, please let me know.