Alanesian was an American 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...

 racing filly

Filly

A filly is a young female horse too young to be called a mare. There are several specific definitions in use.*In most cases filly is a female horse under the age of four years old....

 and successful broodmare. She was bred in Kentucky

Kentucky

The Commonwealth of Kentucky is a state located in the East Central United States of America. As classified by the United States Census Bureau, Kentucky is a Southern state, more specifically in the East South Central region. Kentucky is one of four U.S. states constituted as a commonwealth...

 by E. Barry Ryan, a society trainer

Horse trainer

In horse racing, a trainer prepares a horse for races, with responsibility for exercising it, getting it race-ready and determining which races it should enter...

 and owner of Normandy Farm in Lexington, Kentucky

Lexington, Kentucky

Lexington is the second-largest city in Kentucky and the 63rd largest in the US. Known as the "Thoroughbred City" and the "Horse Capital of the World", it is located in the heart of Kentucky's Bluegrass region...

. She was purchased privately by William Haggin Perry

William Haggin Perry

William Haggin Perry was a prominent owner and breeder of Thoroughbred racehorses. He was the son of Henry Pierrepont Perry, a Wall Street broker, and Edith Lounsbery, the daughter of Richard P...

 whose great-grandfather, James Ben Ali Haggin

James Ben Ali Haggin

James Ben Ali Haggin was an Turkish Americanattorney, rancher, investor and a major owner/breeder in the sport of Thoroughbred horse racing...

, owned Elmendorf Farm

Elmendorf Farm

Elmendorf Farm is a Kentucky Thoroughbred horse farm in Fayette County, Kentucky, and has been involved with horse racing since the early 19th century...

 from which Normandy Farm had been formed in 1959.

For William Perry, Alanesian was not only his first highly successful runner whose wins included the now Grade 1

Graded stakes race

A graded stakes race is a term applied since 1973 by the American Graded Stakes Committee of the Thoroughbred Owners and Breeders Association to thoroughbred horse races in the United States and Canada to describe races that derive their name from the stake, or entry fee, owners must pay...

 Spinaway Stakes

Spinaway Stakes

The Spinaway Stakes is an American Thoroughbred horse race run annually at Saratoga Race Course in Saratoga Springs, New York. Open to two-year-old fillies, it is a Grade I event contested at a distance of seven furlongs on dirt...

, but who became a foundation mare for his breeding operation that was centered around a foal sharing partnership with Claiborne Farm

Claiborne Farm

Claiborne Farm is a thoroughbred Horse breeding operation in near Paris, Kentucky. It was established in 1910, by Arthur B. Hancock, owner of Ellerslie Farm in Albemarle County, Virginia, and has been operated by members of his family ever since.-Owners:...

 in Lexington. As a result of this partnership, Alanesian produced Princessnesian

Princessnesian

Princessnesian was an American Thoroughbred racehorse who, through 2010, is the last female to have won the prestigious Hollywood Gold Cup. Bred and raced by William Haggin Perry, in 1968 the four-year-old mare became only the third female to win the Gold Cup, joining Happy Issue and Two Lea...

, sired by Claiborne's highly influential stallion, Princequillo

Princequillo

Princequillo was a Thoroughbred racehorse conceived in France and born in Ireland. He is known for his performances in long-distance races and his successes as a sire.-Background:...

, and Boldnesian

Boldnesian

Boldnesian was an American Thoroughbred racehorse best known in racing for winning the 1966 Santa Anita Derby and as a sire. Scheduled to run in the Kentucky Derby, Boldnesian's racing career was cut short by an operation after bone chips were discovered following his win in the Santa Anita Derby...

 who was sired by Claiborne's preeminent stallion, Bold Ruler

Bold Ruler

Bold Ruler was an American Thoroughbred Hall of Fame racehorse.Bred by the Wheatley Stable of Gladys Mills Phipps, Bold Ruler was foaled on April 6, 1954 at Claiborne Farm in Paris, Kentucky to Nasrullah and Miss Disco by Discovery...

. Boldnesian's son, Bold Reasoning

Bold Reasoning

Bold Reasoning was an American thoroughbred racehorse foaled in Florida. He was out of the Hail To Reason mare Reason To Earn, by the Santa Anita Derby winner Boldnesian, a son of Bold Ruler....

, sired 1977 U.S. Triple Crown

United States Triple Crown of Thoroughbred Racing

In the United States, the "Triple Crown" is usually the Triple Crown of Thoroughbred Racing, a series of three Thoroughbred horse races for three-year-old horses run in May and early June of each year consisting of the Kentucky Derby, Preakness Stakes, and Belmont Stakes.While Daily Racing Form...

 champion, Seattle Slew

Seattle Slew

Seattle Slew was an American Thoroughbred race horse who won the United States Triple Crown of Thoroughbred Racing in 1977, the tenth of eleven horses to accomplish the feat. He remains the only horse to win the Triple Crown while undefeated. In the Blood-Horse magazine List of the Top 100 U.S...

. As well, Alanesian's daughter Quillesian was the dam of Revidere

Revidere

Revidere was an American Thoroughbred filly racehorse that was voted the 1976 Eclipse Award as the American Champion Three-Year-Old Filly....

, William Perry's 1976 American Champion Three-Year-Old Filly.