There is a listing of German emmigrants on a German website maintained by a school in Kelberg, Germany. If you are researching any Germans who settled in the "Holyland" east of Fond du Lac you should take a look at this site. I know enough German so that I could translate anything you find of interest at that site. The web page is at http://home.t-online.de/home/Schule.Kelberg/page8.htm
Check out the surname list.