O'Reilly is the eldest of triplets, and the fourth of his parents' six children. He was born in Dublin and raised in Fox Chapel, Pittsburgh, and in Dublin.London: Hodder and Stoughton, 1994; Fallon, Ivan "The Player: The Life of Tony O'Reilly"; the authorised biography He was educated first at Harrow School and then at Clongowes Wood.The Observer, London: Sun 27 Jan 2008, James Robinson He sat his Leaving Certificate exams in 1985, and then spent two years working at London advertising agency Doyle Dane Bernbach. O'Reilly went on to attend Georgetown University School of Business.
