About Harry Payne Whitney
Harry Payne Whitney was an American businessman, thoroughbred horse breeder, and member of the prominent Whitney family. Whitney had nineteen horses who ran in the Kentucky Derby, winning it the first time in 1915 with another Broomstick foal, Regret, the first filly ever to capture the race. Whitney won the Kentucky Derby for the second time in 1927 with the colt Whiskery.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.