Generous (8 February 1988 ÷ 15 January 2013) was an Irish-bred, British-trained Thoroughbred racehorse who in 1991 won both the Epsom and the Irish Derby. As a two-year-old he won three of his six races, most notably the Dewhurst Stakes as a 50/1 outsider. He finished fourth in the 2000 Guineas on his three-year-old debut, but showed vastly improved form when moved up to longer distances in summer. In a period of seven weeks he won the Derby by five lengths, the Irish Derby by three lengths and the King George VI and Queen Elizabeth Stakes by a record seven lengths. His performances established him as one of the outstanding British racehorses of his era. After running poorly in the Prix de l'Arc de Triomphe he was retired to stud, where his record was disappointing.
Generous was sired by Caerleon, an American-bred colt who won the Prix du Jockey Club and the Benson and Hedges Gold Cup in 1983 when trained in Ireland by Vincent O'Brien. Caerleon sired many other good winners including Marienbard, Lady Carla, Cape Verdi and Warrsan. The success of Generous enabled Caerleon to claim his only British sires' championship in 1991. Generous' dam, Doff The Derby a daughter of the Preakness Stakes winner Master Derby who was a son of the 1970 Kentucky Derby winner, Dust Commander. Doff the Derby later produced The Oaks winner Imagine. As a daughter of Margarethen, Doff The Derby was closely related to the outstanding racemares Trillion and Triptych.
Generous was given a rating of 139 by the independent Timeform organisation, making him the highest-rated racehorse of the year. In their book A Century of Champions, John Randall and Tony Morris rated Generous a +great– Derby winner, the sixteenth best British or Irish racehorse of the 20th century and the best racehorse in the world in 1991.