John B. Kupfer

John B. Kupfer (March 10, 1833 – September 9, 1897) was an American politician and businessman from Kenosha, Wisconsin who served as Mayor of Kenosha.

Business career
John Kupfer came from the Kingdom of Bavaria. In 1859, Kupfer established a bakery that would become the Kupfer Cracker Company. He is noted as the inventor of the Kenosha Cracker.

Political career
As mayor, John oversaw the construction of Kenosha’s sewer system, grading of streets, and organizing of a formal police force. He also oversaw the construction of Kenosha's high school and fire house. In addition to serving as mayor, Kufper served a five-year term as county supervisor of Kenosha County, Wisconsin. Politically, he was a Democrat.

Personal life
John Kupfer's son, William Kupfer, married Philomena Pirsch, sister of fire apparatus inventor Peter Pirsch.

He died on September 8, 1897.