Re: first generations in russia
My ancestors are also from Russia...before the Rivinius family moved from Germany to Russia they changed thier name from Bachman to Rivinius...
I don't know if that is any information that you can use or not.
but if it does help you at all, please let me know, I am really interested in hearing more...
p.s. We are also related to Remboldts
my Rivinius family resides in North Dakota.