John O'Neill, 1st Viscount O'Neill

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John O'Neill, 1st Viscount O'Neill PC (16 January 1740 – 18 June 1798) was an Irish politician.

O'Neill was the son of Charles O'Neill (died 1769), Member of Parliament for Randalstown, by Catherine Brodrick, daughter of St John Brodrick, of Midleton, County Cork.[1]

He was returned to the Irish House of Commons for Randalstown in 1760, a seat he held until 1783, and then represented County Antrim between 1783 and 1793.[2] He was sworn of the Irish Privy Council in 1781[3] and raised to the Peerage of Ireland as Baron O'Neill, of Shane's Castle in the County of Antrim, in 1793.[4] In 1795 he was further honoured when he was made Viscount O'Neill, of Shane's Castle in the County of Antrim, in the Irish peerage.[5]

Lord O'Neill married the Honourable Henrietta Boyle, daughter of Charles Boyle, Viscount Dungarvan, in 1777. He was killed in the Battle of Antrim during the Irish Rebellion of 1798[6] at the age of 58 and was succeeded in the viscountcy by his son Charles, who was created Earl O'Neill in 1800.[1]


  1. ^ a b John O'Neill, 1st Viscount O'Neill
  2. ^ Irish House of Commons 1692-1800
  3. ^ Privy Counsellors - Ireland
  4. ^ "No. 13589". The London Gazette. 2 November 1793. p. 974.
  5. ^ "No. 13821". The London Gazette. 10 October 1795. p. 1052.
  6. ^ Macdonald, D L; McWhir, Anne (2010). The Broadview Anthology of Literature of the Revolutionary Period 1770-1832. p. 358. ISBN 1551110512.
Parliament of Ireland
Preceded by
Charles O'Neill
Sir Kildare Borrowes, Bt
Member of Parliament for Randalstown
With: Charles O'Neill 1760–1761
St John O'Neill 1761–1771
James St John Jeffereyes 1771–1781
Lord Rawdon 1781–1783
Succeeded by
Michael Smith
John Dunn
Preceded by
Hon. Henry Seymour-Conway
James Willson
Member of Parliament for County Antrim
With: Hon. Hercules Rowley 1783–1792
Edward Jones-Agnew 1792–1793
Succeeded by
Edward Jones-Agnew
Hugh Boyd
Peerage of Ireland
New creation Viscount O'Neill
Succeeded by
Charles Henry St John O'Neill
Baron O'Neill