Sally Bruckheimer <sallybruc@...>
"How common is the surname Kremer in that area?"
Although Kremet may not be common in the area, Kramer is very common (I don't know about that specific area), and since the clerks that wrote our civil records and other things - as well as immigrants - didn't spell consistently, you have to consider all possible spellings of whatever you look for.
My Ruslander family was Rüslander, Russlander, Rüsslender, and Rüssänder as well. And there weren't many records of them in Russia.
My second rule of genealogy, when I taught it, was that spelling doesn't count.