Dunboyne was an American

Thoroughbred The Thoroughbred is a horse breed best known for its use in horse racing. Although the word ''thoroughbred'' is sometimes used to refer to any breed of purebred horse, it technically refers only to the Thoroughbred breed. Thoroughbreds are c ...

racehorse Horse racing is an equestrian performance sport, typically involving two or more horses ridden by jockeys (or sometimes driven without riders) over a set distance for competition. It is one of the most ancient of all sports, as its basic pr ...

. Ridden by

William Donohue William Anthony Donohue (born July 18, 1947) is an American Roman Catholic who has been president of the Catholic League (U.S.), Catholic League in the United States since 1993. Life and career Donohue was born in the borough of Manhattan in ...

for owner, breeder and trainer William Jennings Sr., Dunboyne won the 1887

Preakness Stakes The Preakness Stakes is an American thoroughbred horse race held on Armed Forces Day which is also the third Saturday in May each year at Pimlico Race Course in Baltimore, Maryland. It is a Grade I race run over a distance of 9.5 furlongs () on ...

References

1884 racehorse births Racehorses bred in the United States Racehorses trained in the United States Preakness Stakes winners Thoroughbred family 2-a Byerley Turk sire line {{Racehorse-stub