Who Was The First Wisconsin Born Brewer?

Answer 1

If you're only talking about the franchise since their move to Milwaukee in 1970, then it would have to be Gene Brabender.

A native of Madison (was born there and died there), he went 6-15 during their first season in Milwaukee. He had been with the franchise as a Pilot the previous year.

http://www.baseball-reference.com/b/brabege01.shtml