Leonard A. Schmidtner, born Leonard Kowalski, was a Polish architect who moved to Milwaukee, Wisconsin

Wisconsin

Wisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...

 and designed the former Milwaukee County Courthouse

Milwaukee County Courthouse

The Milwaukee County Courthouse is a high-rise municipal building located in downtown Milwaukee, Wisconsin. Completed in 1931, it is the third county courthouse built in the city and is listed on the National Register of Historic Places....

, a clock tower for Holy Trinity Church (1862) on South Fourth and West Bruce Streets, and St. 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.

A multilingual, nobleman and scholar, he was a descendant of Poland's Von Kowalski family and designed the first Polish Catholic church in Milwaukee: St. Stanislaus.

Projects

• Davis Dry goods store (1860)
• clock tower for Holy Trinity Church Roman Catholic Church (Milwaukee) (added 1862) at 605 South 4th Street and West Bruce Street. Building is listed on the National Register of Historic Places
  National Register of Historic Places
  The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...
  
  .
• St. Stanislaus Catholic Church at 1681 South 5th Street in Milwaukee (renovated 1962 and gold leaf applied to domes).
• former Milwaukee County Courthouse
  Milwaukee County Courthouse
  The Milwaukee County Courthouse is a high-rise municipal building located in downtown Milwaukee, Wisconsin. Completed in 1931, it is the third county courthouse built in the city and is listed on the National Register of Historic Places....