I have always been told I am half German. It turns out my mother's family are from several different groups of German speaking people.
The Kellermann's are from Coburg, Deutschland and ended up in Buffalo, NY. They are related to the Heines, the Bauers, the Gantzers, the Schaufs, the Betz, the Reitz, the Schaffers, the Schroeders and the Schmidts in Buffalo, and to the Dressels, the Crons, the Wickerts, the Ungerich and many more in Germany, mostly from Rhineland-Pfalz and Hesse.
The Versch's are from Bayern, Deutschland, but some of them are related to Austro-Hungarians from Burgenland (Eastern Austria). Some of them ended up in Buffalo, New York and some of them ended up in Herndon, Kansas and surrounding areas.They are related to the Schmitts, the Reibolts, the Kleidostys, the Niemeths (which means German).
The Schirck's are from Bas-Rhin in Alsace, but originally from Switzerland, and ended up in Pennsylvania. They are related to the Honharts, the Lessers, the Schulers, the Ruhlmanns, Dalrymples, the Kopps, the Herrmanns, the Gisselbrechts, the Lindebauers, the Mehs, etc.
The Kopps settled in East Eden, NY and we don't know what part of Germany they are from, but Freiburg has been suggested. They are related to the Apthorpe's of England
When my German males came to the USA, they tended to marry a daughter of a German immigrant. So my umbilical line is one of my earliest lines in the USA. That is probably why I have so many German families I am related to.