In the late 1800's the Mennonites left Russia.They had been there for about 140 years. They were Germans that were invited to live in Russia by Catharine the Great. She promised them no taxes and no military service.
Goverment changed, and when the new conditions were imposed, many of these groups left Russia for Canada, United States, Uraguay, Peru etc.
As a group, these Mennonites and other sects were known as "GERMANS FROM RUSSIA".
A few libraries/museums have been created by the descendants of the migration of over 100 years ago.
Suggest you do a google search for germans from russia--you will learn a lot more about the other sects.
Does your document indicate late 1800's or late 1700's?
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If you left Russia and landed in New York, the papers would show the port of departure---not the place where the passender used to live.Perhaps they boarded in Holland for the big voyage?They could have taken a train to Holland from South Russia.
My children descend from the FAST family, who were Mennonites and are Germans from RUssia.