Tags: Race Horse.
Quadrangle (1961–1978) was an American Thoroughbred racehorse who won the 1964 Belmont Stakes. Bred in Virginia by Paul Mellon he was out of the mare Tap Day a daughter of the Calumet Farm champion stallion Bull Lea. His sire was the multiple American stakes winner Cohoes a son of Mahmoud the Aga Khan’s 1936 Epsom Derby winner.Conditioned for racing by future Hall of Fame trainer Elliott Burch Quadrangle is best known for spoiling Northern Dancer’s bid to capture the 1964 U.S.