I am looking for information on Guenthers in Wisconsin. Anna Gau Guenther was my great grandfather Herman Gau's sister. His father Ferdinand Gau lived with Guenther's for a time. Ferdinand Gau came over to the United States in about 1851 from Vendor, Germany. with his wife Fredericka and his 5 year old son Herman. My Grandmother wrote to Melvin Guenther for many years, but we have lost contact. I am looking for more information on Ferdinand and Fredricka.