John Kennett was born in St. Petersburg, Russia, on March 9th, 1809, his father being involved with the United States Embassy. Kennett would pass away on December 12th, 1898 in Avondale, a suburb of Cincinnati.
He attended at Phillips Academy in Andover, Massachusetts, and prior to the war was a tobacco agent. After the war he was an insurance agent. His son was a brevet brigadier general (Henry G. Kennett, also buried in Spring Grove).
John Kennett was colonel of the 4th Ohio Cavalry from August 30th, 1861. He would command the Cavalry Division of the Army of the Ohio and then in the 14th Army Corps. He resigned his commission on January 23rd, 1863 due to physical debility caused by a "stricture of the urethra of long standing, that has given rise to chronic cystitis and organic disease of the kidneys."
Kennett is buried in Section 47, Lot 77.