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About Hugh O'Neill, 3rd Baron Rathcavan
- Hugh Detmar O'Neill, 3rd Baron Rathcavan (born 14 June 1939) is a hereditary peer who sat as a crossbencher in the British House of Lords from 1994 until 1999. He was educated at Eton College.O'Neill ran Lamont, a textile company in Northern Ireland, in the 1980s and was chairman of the Northern Ireland Tourist Board before taking on the Brasserie St Quentin in Knightsbridge in 2002.
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