About Thomas Conolly
Lived 1738 – 1803 (aged 64–65). Thomas Conolly was a politician.
Thomas Conolly (Leixlip Castle, 1738 – 27 April 1803 Celbridge) was an Irish landowner and Member of Parliament.
Early life
leftConolly was the son and heir of William James Conolly (d. 1754) of Castletown House, County Kildare, Ireland, by his wife Lady Anne Wentworth, daughter of Thomas Wentworth, 1st Earl of Strafford (1672–1739). In 1758 he married Lady Louisa Lennox, a daughter of Charles Lennox, 2nd Duke of Richmond, but had no children.
Career Conolly sat in the Parliament of Great Britain for Malmesbury from 1759 to 1768 and for Chichester from 1768 to 1780. In 1761 he was elected to the Parliament of Ireland for Ballyshannon and for County Londonderry, sitting for the latter constituency until May 1800. On 6 April 1761 he was appointed to the Privy Council of Ireland. In Dublin, Conolly was a member of the Kildare Street Club.
Property Wentworth Castle Wentworth Castle: Horace Walpole found the south front (finished 1764) evinced "the most perfect taste in architecture". centerIn 1802 Conolly was left Wentworth Castle by his second cousin Augusta Anne Hatfield-Kaye, sister of Frederick Wentworth, 3rd Earl of Strafford. On his death Wentworth Castle was inherited by Frederick Thomas William Vernon, grandson of the 1st Earl of Strafford's daughter Harriet Wentworth.
Castletown House leftCastletown House passed to his widow Lady Louisa and then to Edward Pakenham, grandson of Conolly's sister Harriet Conolly, and was sold by William Conolly-Carew, 6th Baron Carew, in 1965.
Cliff House The Conolly summer residence 'Cliff House' on the banks of the River Erne between Belleek, County Fermanagh and Ballyshannon, County Donegal was demolished as part of the Erne Hydroelectric scheme, which constructed the Cliff and Cathaleen's Fall hydroelectric power stations. Cliff hydroelectric power station was constructed on the site of 'Cliff House' and was commissioned in 1950.
5, St James's Square Left: Wentworth House, 5, St James's Square, LondonWentworth House, 5, St James's Square, Conolly's London townhouse, built by his uncle William Wentworth, 2nd Earl of Strafford (1722–1791), became the property of his nephew George Byng (1764–1847), the son of his sister Anne Conolly, whose younger brother was Field Marshal John Byng, 1st Earl of Strafford (1772-1860), elevated to the peerage in 1847 with the same territorial designation as the earldom of his maternal cousins, which earldom had become extinct in 1799.
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Important facts
Family & relationships
People in Thomas Conolly's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Thomas Conolly's
Frequently asked questions
Who was Thomas Conolly?
Irish politician
When was Thomas Conolly born?
Thomas Conolly was born in 1738.
When did Thomas Conolly die?
Thomas Conolly died on 27 April 1803.
What was Thomas Conolly's occupation?
Thomas Conolly was a politician.
Sources & further reading
· DBpedia: Thomas Conolly (1738–1803)
Cite this page
APA: Biography.guide. (2026). Thomas Conolly. https://biography.guide/thomas-conolly/
MLA: "Thomas Conolly." Biography.guide, https://biography.guide/thomas-conolly/.
Chicago: "Thomas Conolly." Biography.guide. https://biography.guide/thomas-conolly/.
Data last updated: 2026-09-21 · Spot an error? Report a correction.
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