Thomas Jefferson is a 13 year old horse and has raced from 2011 to 2013. He was sired by Mr. Greeley out of the Monsun mare Milago. He was trained by Michael J. Maker and has raced for Robert N. Clay, Tracy Farmer, and was bred in Kentucky, United States by Tracy Farmer. Thomas Jefferson has raced at Churchill Downs, Fair Grounds Race Course, Keeneland, Turfway Park.