The THIELKE family first shows up in Wisconsin in the 1860 Federal Census for the town of Grafton, Ozaukee County, Wisconsin.
Listed are the parents, Henry and Mary, then the children, Sophie, Joachim, Fritz, Herman, and Mina. I noticed that Johann is listed as “Joachim.” Joachim is considered a Hebrew name and I also can’t find information that it’s interchangeable with Johann. So, that sets up a mystery or just the fact that the census taker was a little careless or maybe couldn’t understand the family. We’ll never know.
This census says that all members of the family were born in Mecklenberg, except the last two children. The name is also spelled THIELK.