To date there are two known instances from Germany:
Boewe, Böwe [1]
Bowe from Germany to Wisconsin [2]
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1. If you are researching a Boewe or Böwe from Germany, I can connect you with another researcher. Feel free to contact me.
2. Various. "Nicholas Bowe Families in Tilden, Wisconsin from Germany in the 1880 Census." Bowe Message Board post, Ancestry.com. (http://boards.ancestry.com/surnames.bowe/346.1/mb.ashx?r=an: accessed 30 July 2011).