Leonard A. Schmidtner, born Leonard Kowalski, was a Polish architect who moved to Milwaukee, Wisconsin and designed the former Milwaukee County Courthouse, a clock tower for Holy Trinity Church on South Fourth and West Bruce Streets, and Saint Stanislaus Catholic Church He was one of the first Poles in the city and spoke German and adopted the name Schmidtner to help establish himself.
Career
Davis Dry goods store (1860)
Building is listed on the National Register of Historic Places. former Milwaukee County Courthouse.