Dermot K. Weld, former jockey, and one of Ireland’s most successful racehorse trainers, is born on July 29, 1948, in Kildare, County Kildare. He sets the record in 2000 for the most winners trained in Ireland with 2,578. He wins the Irish Flat Training Championship eight times in 1983, 1985, 1989, 1990, 1993, 1994, 1996, and 1998. As a trainer, he wins the Melbourne Cup in Australia twice, all five of the Irish Classics, the Epsom Derby and Epsom Oaks, the Hong Kong Mile, Derby Italiano, American Derby, and Breeders’ Cup Turf.

Weld is educated at Newbridge College and University College Dublin (UCD), becoming a qualified veterinarian in 1970, at the time, the youngest qualified vet in Ireland. In 2016, he is awarded UCD Alumnus of the Year in Veterinary Medicine.

Weld starts his career as an amateur jockey, obtaining a training licence in 1972. He then takes over the stable at Rosewell House, in The Curragh, from his father, Charlie Weld, who is also a successful racehorse trainer. He goes on to win the Irish Flat Training Championship eight times in 1983, 1985, 1989, 1990, 1993, 1994, 1996 and 1998.

Weld sets a new record for the most winners trained in Ireland with 2,578 in August 2000, holding the record until Willie Mullins overtakes it in May 2024. During his training career, he saddles over 4,000 winners (to 2016).

Weld is played by Brendan Gleeson in the feature film The Cup (2011).