- male, deceased (1990)
- Terence Marne O'Neill, Baron O'Neill of the Maine, PC (10 September 1914-12 June 1990) was the fourth Prime Minister of Northern Ireland.
- male, 52 years old
- Kevin O'Neill (born January 24 1957) served as a basketball coach in both the NCAA and the NBA. After tenures at North Country Community College...
- male, deceased (1994)
- Phelim O'Neill, 2nd Baron Rathcavan (2 November 1909 - 20 December 1994) was a politician in Northern Ireland and a hereditary peer in the House of...
- male
- Sean O'Neill, 3rd Earl of Tyrone. Sean left Ireland with his father Hugh O'Neill and Rory O'Donnell, 1st Earl of Tyrconnell during the Flight of...
- male, 64 years old
- Martin John O'Neill, Baron O'Neill of Clackmannan (born 6 January 1945) is a Scottish politician. He was a Labour Member of Parliament between 1979...
- male, deceased (1616)
- Aodh Mór Ó Néill (anglicised as Hugh The Great O'Neill was an Irish chieftain of the late 16th century, who became 2nd Earl of Tyrone (known as the...
- male, deceased (1982)
- Robert William Hugh O'Neill, 1st Baron Rathcavan PC (8 June, 1883-28 November, 1982) was an Ulster Unionist member of both the UK Parliament and...
- male, deceased (1928)
- Edward O'Neill, 2nd Baron O'Neill, known as Edward Chichester until 1855, was an Irish peer and Conservative politician. O'Neill was the eldest son...
- male, deceased (1887)
- Reverend William O'Neill, 1st Baron O'Neill (4 March 1813-18 April 1883), known as William Chichester until 1855, was an Irish clergyman and...
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