Marengo Public Library
Carnegie Grant Information
Town & County
Twelfth Census of the United States — 1900. p. 450.
Marengo is the county seat of Iowa County, which was established on February 17, 1843. In 1845, the site was chosen, and the town was purportedly named for the plains of Marengo in Italy, where Napoleon Bonaparte won a victory over the Austrians in 1800.
(Source: Pratt, LeRoy G. “The Counties and Courthouses of Iowa.” Mason City, Ia; Klipto Printing & Office Supply Company, 1977, p. 164.)