Prehistoric cultural affiliation(s) include Woodland Cultures, Adena, Hopewell and Late Adena dating back to 999 BC.
Several famous people are associated with these Clinton County historic places including James W. Denver, x, Eli Harvey and Judge Azariah W. Doan.
Some of the country's most noteable architects helped create the Clinton County places including Robert Wickersham, Zimri Wall, John C. Gregg, W. Lewis Kramer, William Cleveland, W.M. Cleveland, Eli Harvey, Paterson Vehicle Co., Allen & Co. and James Wilson. Prominent architectural styles found in Clinton Country are Italianate, Federal and Greek Revival.