David O'Brien (racehorse trainer)
David O'Brien is a former Irish racehorse trainer. He was the son of the successful trainer [[Vincent O'Brien and Jacqueline O'Brien nee Wittenoom author and photographer].
His primary successes included Assert, who won the Irish and French Derbies, and Secreto, Derby, defeating El Gran Senor trained by his father Vincent.[1] David O'Brien remains the youngest trainer to win the Epsom Derby, The Irish Derby and the French Derby. He was also the first foreign trainer to win this race.[2]
He retired from training in the late 1980s and moved to France where he purchased a vineyard, Chateau Vignelaure where he restored the reputation of the vineyard and as the winemaker won many French and international accolades.<ref>"Chateau Vignelaure". 1 June 2009. Retrieved 14 June 2011.
- "Vincent O'Brien". The Daily Telegraph. 1 June 2009. Retrieved 11 May 2010.
- Smith, Brian (1991). The horse in Ireland. Wolfhound Press. p. 208. ISBN 978-0-86327-311-7.