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H-G-W Partners (Hancock-Gaillard-Whittingham) represents the names of the three American partners who owned the Hall of Fame Thoroughbred racehorse, Sunday Silence (1986-2002). Their colt won a number of important American Graded stakes races including the 1989 Kentucky Derby, Preakness Stakes, and Breeders' Cup Classic.
The three partners were:
- Arthur B. Hancock III (b. 1943) - 50% partner who is a horse breeder and the owner of Stone Farm near Paris, Kentucky;
- Charlie Whittingham (1913-1999) - 25% partner who was the horse's Hall of Fame trainer;
- Dr. Ernest Gaillard (1913-2004) - 25% partner, 1938 graduate of the University of Louisville and active in the organizing of the Kentucky Derby race, and a medical doctor with the Eighth Army Air Forces during World War II.