Cincinnati (ca. 1860–1878) was General Ulysses S. Grant's most famous horse during the American Civil War. He was the son of Lexington, the fastest four-mile Thoroughbred in the United States (time 7:19.75 minutes) and one of the greatest sires. Cincinnati was also the grandson of the great Boston, who sired Lexington.
At an early age, Grant emotionally bonded to horses. A shy, quiet child, he found joy in working with and riding them. Grant excelled in horsemanship at West Point, and at graduation, he put on an outstanding jumping display. Grant owned many horses in his lifetime, including one named Jeff Davis, so named because he acquired it during his Vicksburg Campaign from Jefferson Davis's Mississippi plantation.
Cincinnati was a gift from an admirer during the War. The horse was large (17 hands (68 inches, 173 cm)), handsome, and powerful, and he quickly became Grant's favorite. When Grant rode Cincinnati to negotiate Robert E. Lee's surrender at Appomattox Court House, the animal became immortalized. Virtually all depictions of Grant in drawings, granite, and bronze, are astride Cincinnati including at the Ulysses S. Grant Memorial, located on the Mall in Washington, D.C., at the base of Capitol Hill.