Louis Jacob Breithaupt was an industrialist and politician. He was born March 3, 1855, in Buffalo, New York, the son of Philip Ludwig (known as Louis) and Catherine Hailer. The family moved to Berlin (later Kitchener) Ontario in 1857. He married Emma Alverene Devitt on April 5, 1881 and the couple had 8 children: Louise Evelyn; Emma Lillian; Martha Edna; Rosa Melvina; Louis Orville; William Walter; Catherine Olive; and Paul Theodore.

Louis took over the family business and served as Mayor of Kitchener from 1888-1889. He represented Waterloo North in the Legislative Assembly of Ontario from 1899 to 1902 as a Liberal member. Louis died March 6, 1939 in St. Petersburg, Florida and was buried in Mount Hope Cemetery, Kitchener.