I came across your query this am and may have some info for you. My great grandmother's sister, Wilhelmina Schroeder (02-29-1860) wed Edward Ubbelohde and they lived somewhere in Sheboygan County near Glenbeulah. I have a photo album with their photos as well as other family members who I believe are mostly from the Schroeder side. I also have located a person named Spurbeck in your area who also is doing research into the Ubbelohde side.
If I can be of any further help let me know. Good hunting.