Regarding your post: "I have some Mantei/Mantie that came to the US in 1901 from South Russia. If there is any connection let me know. I am having a hard time finding any information on them."
I believe you may be looking for my family.My Great-Grandfather and family came to America in the early 1900's.I understand we came from a small province in Russia near Chernobyl.The original spelling would have been Manthey, there is a town on old maps with that name.
20 years ago, a cousin did an in-depth search of our family tree.A rather thick booklet was produced of his findings.I'll have to find out where it is.I have not looked for it in years, but it's around.
I could direct questions to my Grandfather as well.He is 85-years-old.He probably knows quite a bit.