About John O'Neill, 3rd Viscount O'Neill
Lived 1780 – 1855 (aged 74). John O'Neill, 3rd Viscount O'Neill was a British politician.
John Bruce Richard O'Neill, 3rd Viscount O'Neill (30 December 1780 – 12 February 1855) was an Irish Tory politician who sat in the House of Commons from 1802 to 1841 and then in the House of Lords.
O'Neill was the son of John, Viscount O'Neill and his wife Henrietta Frances Boyle.
In 1802 O'Neill was elected Member of Parliament (MP) for Antrim. He held the seat until 1841 when he inherited the title Viscount O'Neill from his brother Charles O'Neill, 1st Earl O'Neill.
O'Neill died at the age of 74. His title became extinct, but his estates passed to a relative, William Chichester, who subsequently assumed the surname O'Neill and received the Barony of O'Neill.
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Important facts
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Contemporaries
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Frequently asked questions
Who was John O'Neill, 3rd Viscount O'Neill?
British politician (1780-1855)
When was John O'Neill, 3rd Viscount O'Neill born?
John O'Neill, 3rd Viscount O'Neill was born on 30 December 1780.
When did John O'Neill, 3rd Viscount O'Neill die?
John O'Neill, 3rd Viscount O'Neill died on 12 February 1855.
What was John O'Neill, 3rd Viscount O'Neill's occupation?
John O'Neill, 3rd Viscount O'Neill was a politician.
What nationality was John O'Neill, 3rd Viscount O'Neill?
John O'Neill, 3rd Viscount O'Neill was British.
Sources & further reading
· Wikipedia: John O'Neill, 3rd Viscount O'Neill
· DBpedia: John O'Neill, 3rd Viscount O'Neill
Cite this page
APA: Biography.guide. (2026). John O'Neill, 3rd Viscount O'Neill. https://biography.guide/john-o-neill-3rd-viscount-o-neill/
MLA: "John O'Neill, 3rd Viscount O'Neill." Biography.guide, https://biography.guide/john-o-neill-3rd-viscount-o-neill/.
Chicago: "John O'Neill, 3rd Viscount O'Neill." Biography.guide. https://biography.guide/john-o-neill-3rd-viscount-o-neill/.
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