Leonard Schmidtner

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 (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.