Hi Nicole ~
I thought that was you!! Happy to help anytime (always feel free, too, to use my "home" email address if you ever want to be sure I a question that you have). It's email@example.com
You right, very intriguing about the Adam Lietz to John Lietz connection. Most often when people immigrated to the U.S. during the mid 19th century, they headed right for a town where they already had a relative or family friends living. That could explain why John Lietz and his family landed where Adam Lietz was already living -- some relationship there, I'm sure.
Nicole, the one U.S. census that I don't have is the 1870, darn it. Sure wish I did. You might want to try using the www.google.com
search engine, and typing 1870 CENSUS WISCONSIN in the search blank. It may well pull up a couple of sites that provide you with an email address (or some message board contact) for someone that has that census and is helping people find things in it.