Pratt was born on April 24, 1819, in Rushville, Ontario County, New York. In New York he attended the Army Academy at West Point from 1837 to 1839.
Pratt was born on April 24, 1819, in Rushville, Ontario County, New York. He spent time at the military academy at West Point, which is located in New York, from 1837 to 1839.