Secreto was a Maryland

Maryland

Maryland is a U.S. state located in the Mid Atlantic region of the United States, bordering Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware to its east...

 bred Thoroughbred

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...

 racehorse

Horse racing

Horse racing is an equestrian sport that has a long history. Archaeological records indicate that horse racing occurred in ancient Babylon, Syria, and Egypt. Both chariot and mounted horse racing were events in the ancient Greek Olympics by 648 BC...

 who raced in the United Kingdom

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 and Ireland

Ireland

Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

.

A son of Northern Dancer

Northern Dancer

Northern Dancer was a Canadian-bred Thoroughbred racehorse and the most successful sire of the 20th Century. The National Thoroughbred Racing Association calls him "one of the most influential sires in Thoroughbred history"....

, Secretro's damsire was the U.S. Triple Crown

Triple Crown of Thoroughbred Racing

The Triple Crown of Thoroughbred Racing consists of three races for three-year-old Thoroughbred horses. Winning all three of these Thoroughbred horse races is considered the greatest accomplishment of a Thoroughbred racehorse...

 champion, Secretariat

Secretariat (horse)

Secretariat was an American Thoroughbred racehorse, that in 1973 became the first U.S. Triple Crown champion in 25 years, setting new race records in two of the three events in the Series—the Kentucky Derby , and the Belmont Stakes —records that still stand today.Secretariat was sired by Bold...

. He was bred by E. P. Taylor

E. P. Taylor

Edward Plunket Taylor was a Canadian business tycoon and famous breeder of thoroughbred race horses. Known to his friends as "Eddie", he is universally recorded as "E. P...

 at the Maryland branch of his Windfields Farm

Windfields Farm

Windfields Farm is a six square kilometre thoroughbred horse breeding farm founded by businessman E. P. Taylor in Oshawa, Ontario, Canada. The first stable and breeding operation of E. P. Taylor originated with a property near the city of Toronto known as Parkwood Stable when it was owned by...

. He was purchased by Luigi Miglietti and trained in Ireland by David O'Brien.

In the 1984 Epsom Derby

Epsom Derby

The Derby Stakes, popularly known as The Derby, internationally as the Epsom Derby, and under its present sponsor as the Investec Derby, is a Group 1 flat horse race in Great Britain open to three-year-old thoroughbred colts and fillies...

, Secreto defeated the odds-on favourite El Gran Senor

El Gran Senor

El Gran Senor was an American-bred Thoroughbred race horse, foaled at Windfields Farm in Maryland.An outstanding two-year-old who went on to win European classics over a mile and over 12 furlongs, El Gran Senor received a Timeform rated 136...

, who was also by Northern Dancer,trained by David O'Briens's father Vincent

Vincent O'Brien

Dr. Michael Vincent O'Brien was an Irish race horse trainer from Churchtown, County Cork, Ireland. In 2003 he was voted the greatest influence in horse racing history, according to a worldwide vote hosted by the Racing Post newspaper...

, by a short-head. He never ran again after his Derby success and was retired to stud at Calumet Farm

Calumet Farm

Calumet Farm is a Thoroughbred breeding and training farm established in 1924 in Lexington, Kentucky, United States by William Monroe Wright, founding owner of the Calumet Baking Powder Company. Calumet is located in the heart of Lexington's blue grass country, the finest horse breeding region in...

 in Kentucky before being sent to Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

 in 1992 where he died in 1999. His most notable offspring was the 1991 English 2,000 Guineas winner Mystiko. Secreto's half brother Istabraq

Istabraq

Istabraq is a retired Irish Thoroughbred racehorse who was most famous for his hurdling. He had an exceptional pedigree, being the produce of Sadler's Wells, a son of Northern Dancer, and a Secretariat mare making him a three-quarter brother to Epsom Derby winner Secreto. He won the Champion...

 won the Champion Hurdle

Champion Hurdle

The Champion Hurdle is a Grade 1 National Hunt hurdle race in Great Britain which is open to horses aged four years or older. As part of a sponsorship agreement with the online sportsbook StanJames.com, the race is now known as the Stan James Champion Hurdle...

at Cheltenham's National Hunt Festival in 1998, 1999 and 2000.