Date of Birth: 
Place of Birth: County Wexford, Leinster, Ireland
About Aidan O'Brien
- Aidan Patrick O'Brien (born 16 October 1969 in County Wexford, Ireland) is an Irish horse racing trainer.
- Since 1996, he has been the private trainer at Ballydoyle Stables near Cashel in County Tipperary for John Magnier and his Coolmore Stud associates.
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