Born: 1815-XX-XX Canada
Died: 1862-07-04 Knoxville, Illinois
Manning studied law in Canada, and in 1837, he moved to Knox County, Illinois, where he remained for about twelve years. There he practiced law and served as county judge several times. In 1842, he won election to the Illinois House of Representatives, representing Knox County, serving until 1846. In 1847, Manning married Virginia Hansford. He was a member of the electoral college for the presidential election in 1848. In 1850, Manning was practicing law and owned $2,000 in real property. In 1854, Manning and his family moved to Peoria, Illinois, where Manning formed a law partnership with Amos L. Merriman, a partnership that lasted until June 1861. In 1860, Manning had accumulated $5,000 in real property, with a personal estate of $5,000. Representing the counties of Peoria and Stark, Manning was a delegate to the 1862 Illinois constitutional convention.
Biographical Encyclopaedia of Illinois of the Nineteenth Century (Philadelphia: Galaxy, 1875), 372; John M. Palmer, ed., The Bench and Bar of Illinois: Historical and Reminiscent (Chicago: Lewis, 1899), 1:297-98; John Clayton, comp., The Illinois Fact Book and Historical Almanac, 1673-1968 (Carbondale: Southern Illinois University Press, 1970), 211, 213; Illinois Statewide Marriage Index, Knox County, 18 July 1847, Illinois State Archives, Springfield, IL; U.S. Census Office, Seventh Census of the United States (1850), Knoxville, Knox County, IL, 319; U.S. Census Office, Eighth Census of the United States (1860), Ward 5, Peoria, Peoria County, IL, 337.