John L. SemmannJohn L. Semmann was a member of the Wisconsin State Assembly.BiographyJohn Leborius Semmann was born on March 18, 1822, in Koslin, Prussia. He married Eva Juditha Koch and had eleven children. Semmann died on January 19, 1907, in Milwaukee, Wisconsin, and was buried there.CareerSemmann was a Democratic member of the Assembly during the 1871 and 1874 sessions.