Richard Trench, 2nd Earl of Clancarty
|The Right Honourable
The Earl of Clancarty
GCB, GCH, PC
|President of the Board of Trade|
29 September 1812 – 24 January 1818
|Prime Minister||The Earl of Liverpool|
|Preceded by||The Earl Bathurst|
|Succeeded by||Hon. F. J. Robinson|
|Born||19 May 1767|
|Died||24 November 1837
Kinnegad, County Westmeath
|Spouse(s)||Henrietta Margaret Staples
|Alma mater||St John's College, Cambridge|
Richard Le Poer Trench, 2nd Earl of Clancarty, 1st Marquess of Heusden GCB, GCH, PC (19 May 1767 – 24 November 1837), styled The Honourable from 1797 to 1803 and then Viscount Dunlo to 1805, was an Irish peer, a nobleman in the Dutch nobility, and a diplomat. He was an Irish, and later British, Member of Parliament and a supporter of Pitt.
Background and education 
Clancarty was the son of William Trench, 1st Earl of Clancarty and Anne, daughter of Charles Gardiner and his seat was Garbally Court in Ballinasloe, East County Galway where he was associated with the Great October Fair. His brother was Power Le Poer Trench (1770–1839), archbishop of Tuam. He was educated at Kimbolton School and St John's College, Cambridge.
Political career 
Trench represented Newtown Limavady in the Irish House of Commons from 1796 to 1798. He sat further for Galway County from 1797 to the Act of Union in 1801. He was credited with resolving various border disputes in Holland, Germany and Italy at the Congress of Vienna, 1814–1815, and in his role as Ambassador to the Netherlands. For his service as ambassador to The Hague, he was awarded the hereditary title of Marquess of Heusden in the peerage of The Netherlands on 8 July 1815 by William I of the Netherlands, following the defeat of Napoleon in Brabant in that same province's southern reaches. Trench was elected one of the 28 representative peers of Ireland on 16 December 1808. His seat in the House of Lords became hereditary when he was created Baron Trench (4 August 1815) and Viscount Clancarty (created 8 December 1823), in the Peerage of the United Kingdom, his older peerages being Irish peerages. He was a Commissioner for the Affairs of India.
In the same Royal Decree that awarded the Marquessate of Heusden, K.B. of 8 July 1815, numbers 13 en 14, another Irishman, Arthur Wellesley was granted the Netherlands' Kingdom hereditary nobility-title Prince of Waterloo, following his recent exploits at that place in modern-day Kingdom of Belgium.
On 6 February 1796 he married Henrietta Margaret Staples, daughter of John Staples and Ann Conolly. They had the following children:
- Lady Lucy Le Poer Trench (d. 1839), married Robert Maxwell
- Lady Louisa Augusta Anne Le Poer Trench (b. 23 December 1796, d. 7 February 1881), married Reverend William Le Poer Trench
- Lady Harriet Margaret Le Poer Trench (b. 13 October 1799, d. 1885), married Thomas Kavanagh "the MacMurrough", a descendant of Art mac Art MacMurrough-Kavanagh
- Lady Emily Florinda Le Poer Trench (b. 7 November 1800), married Giovanni Cossiria
- Lady Frances Power Le Poer Trench (b. 22 January 1802, d. 28 December 1804)
- William Thomas Le Poer Trench, 3rd Earl of Clancarty (b 21 September 1803, d. 26 April 1872), married Lady Sarah Juliana Butler, daughter of Somerset Richard Butler, 3rd Earl of Carrick
- Hon. Richard John Le Poer Trench (b. 1805)
- Commander Hon. Frederick Robert Le Poer Trench (b. 23 July 1808, d. April 1867), married Catherine Maria Thompson
|Ancestors of Richard Trench, 2nd Earl of Clancarty|
- Venn, J.; Venn, J. A., eds. (1922–1958). "Trench, Richard Power Keating". Alumni Cantabrigienses (10 vols) (online ed.). Cambridge University Press.
- Hoge Raad van Adel, Wet op Adeldom 1994; Netherlands' Law of Nobility, Article 1
- Urban, Sylvanus. "The Earl of Clancarty." The Gentleman's Magazine. Obituary Vol. IX, January to June, London: William Pickering; John Bowyer Nickols and Son, 1838. (pp. 93–94) googlebooks Retrieved October 17, 2008
- thepeerage.com Accessed March 9, 2008
- Lodge, Edmund. The Peerage of the British Empire As at Present Existing: Arranged and Printed from the Personal Communications of the Nobility, by Edmund Lodge, to Which Is Added a View of the Baronetage of the Three Kingdoms. London: Saunders and Otley, 1834. (p. 96) googlebooks Accessed March 9, 2008
- Hansard 1803–2005: contributions in Parliament by the Earl of Clancarty