| Cornelius Hamilton | |
| State: | Ohio |
| Term Start: | March 4, 1867 |
| Term End: | December 22, 1867 |
| Predecessor: | James Hubbell |
| Successor: | John Beatty |
| State Senate1: | Ohio |
| District1: | 13th |
| Term Start1: | January 7, 1856 |
| Term End1: | January 3, 1858 |
| Predecessor1: | William Lawrence |
| Successor1: | C. H. Gatch |
| Birth Name: | Cornelius Springer Hamilton |
| Birth Date: | 2 January 1821 |
| Birth Place: | Gratiot, Ohio, U.S. |
| Death Place: | Marysville, Ohio, U.S. |
| Party: | Republican |
| Education: | Denison University |
Cornelius Springer Hamilton (January 2, 1821 - December 22, 1867) was a lawyer who was a U.S. Representative from Ohio, serving from March 4, 1867 until his death.
Born in Gratiot, Ohio, Hamilton attended the common schools and Denison University. He moved with his parents to Union County in 1839, where he engaged in agricultural pursuits with his father. He studied law, and was admitted to the bar in 1845, commencing practice in Marysville, Ohio.
He acted as a land appraiser and assessor in 1845, after which he served as delegate to the State constitutional convention 1850-1851. He was editor and proprietor of the Marysville Tribune 1850-1853. He then served as member of the State senate in 1856 and 1857, and was appointed by President Lincoln assessor of the eighth congressional district of Ohio in 1862 and served until 1866. Hamilton was elected as a Republican to the Fortieth Congress and served from March 4, 1867, until his death, December 22, 1867.
Hamilton was beaten to death by his apparently deranged son, Thomas, with a board while the two fed livestock at the family farm in Marysville. Thomas Hamilton then pursued his mother, younger brother John, and members of the local community with an axe, injuring but not killing anyone else.[1]
He was interred in Oakdale Cemetery in Marysville.