I too have Jewish Zimmermans. My relatives came from Belarus (formerly Brisk Litovsk) Russia. I was told by some that our surname was TSIMMERMAN. Looking for info on FRANK ZIMMMERMAN (TSIMMERMAN) and TOBA SILVERSMITH ZIMMERMAN (TSIMMERMAN) from Brisk Litovsk. Still have to do some further research. If anyone has info, please email me at [email protected] Thanks and Happy Holidays.