Henry Pelham Fiennes Pelham-Clinton, 5th Duke of Newcastle-under-Lyne, KG, PC (22 May 1811 – 18 October 1864), styled Earl of Lincoln before 1851, was a British politician.

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Quick Facts Secretary of State for War and the Colonies, Monarch ...

His Grace The Duke of Newcastle KG PC
The 5th Duke of Newcastle, c. 1860
Secretary of State for War and the Colonies
In office 28 December 1852 – 10 June 1854
Monarch	Victoria
Prime Minister	The Earl of Aberdeen
Preceded by	Sir John Pakington, Bt
Succeeded by	Office abolished
Secretary of State for War Secretary at War
In office 12 June 1854 – 30 January 1855
Monarch	Victoria
Prime Minister	The Earl of Aberdeen
Preceded by	New office
Succeeded by	The Lord Panmure
Secretary of State for the Colonies
In office 18 June 1859 – 7 April 1864
Monarch	Victoria
Prime Minister	The Viscount Palmerston
Preceded by	Sir Edward Lytton, Bt
Succeeded by	Edward Cardwell
Chief Secretary for Ireland
In office 14 February 1846 – June 1846
Monarch	Victoria
Prime Minister	Sir Robert Peel
Preceded by	Sir Thomas Freemantle
Succeeded by	Henry Labouchere
Personal details
Born	(1811-05-22)22 May 1811
Died	18 October 1864(1864-10-18) (aged 53)
Nationality	British
Political party	Tory (1832–1834) Conservative (1834–1846) Peelite (1846–1859) Liberal (1859–1864)
Spouse	Lady Susan Douglas-Hamilton (1814–1889)
Children	Henry Pelham-Clinton, 6th Duke of Newcastle-under-Lyne Lord Edward Clinton Lady Susan Vane-Tempest Lord Arthur Pelham-Clinton Lord Albert Pelham-Clinton
Parents	Henry Pelham-Clinton, 4th Duke of Newcastle-under-Lyne Georgina Elizabeth Mundy
Alma mater	University of Oxford

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Newcastle was the son of Henry Pelham-Clinton, 4th Duke of Newcastle-under-Lyne, by his wife Georgina Elizabeth, daughter of Edward Miller-Mundy. He was educated at Eton and Christ Church, Oxford, where he took his B.A. degree in 1832, and was created a D.C.L. in 1863.^[1]

Newcastle was returned to Parliament for South Nottinghamshire in 1832, a seat he held until 1846, and then represented Falkirk Burghs until 1851, when he succeeded his father in the dukedom. Initially a Tory, he served under Sir Robert Peel as First Commissioner of Woods and Forests from 1841 to 1846 and as Chief Secretary for Ireland in 1846, as the effects of the Great Irish Famine began to take hold. He was admitted to the British Privy Council in 1841, and to the Irish Privy Council on 14 February 1846.^[1]

Newcastle joined the Peelites in 1846, and held office in Lord Aberdeen's coalition government as Secretary of State for War and the Colonies between 1852 and 1854, and as Secretary of State for War and Secretary at War between 12 June 1854 and 1 February 1855, when he resigned over the Crimean War.^[1]

From 18 June 1859 to April 1864, he served as Secretary of State for the Colonies in Lord Palmerston's Liberal administration. In 1860, while holding this office, he went to Canada and the United States, in company with the Prince of Wales. Apart from his political career he also held the honorary posts of Lord Lieutenant of Nottinghamshire from 1857 to 1864 and Lord Warden of the Stannaries from 1862 to 1864. He was made a Knight of the Garter on 17 December 1860.^[1]

Lord Lincoln was a member of the Canterbury Association from 27 March 1848. Upon succeeding to the dukedom, he joined the association's management committee on 29 January 1851.^[2] In 1849, the chief surveyor of the Canterbury Association, Joseph Thomas, named the future town of Lincoln in New Zealand after him. The town's university was in turn also named after Lord Lincoln.^[2][3]

Newcastle married Lady Susan Hamilton (9 June 1814 – 28 November 1889), daughter of Alexander Hamilton, 10th Duke of Hamilton, on 27 November 1832. They had five children:

• Henry Pelham-Clinton, 6th Duke of Newcastle-under-Lyne (25 January 1834 – 22 February 1879), who married Henrietta Adela Hope (11 April 1843 – 8 May 1913) on 11 February 1861 and had five children.
• Lord Edward William Pelham-Clinton (11 August 1836 – 9 July 1907), who married Matilda Jane Cradock-Hartopp (died 23 October 1892) on 22 August 1865.
• Lady Susan Charlotte Catherine Pelham-Clinton (7 April 1839 – 6 September 1875), who married Lord Adolphus Vane-Tempest (2 July 1825 – 11 June 1864) on 23 April 1860. She was a mistress of Edward VII when he was Prince of Wales.
• Lord Arthur Pelham-Clinton (23 June 1840 – 18 June 1870) who died, possibly by suicide, after being charged in the Boulton and Park case.^[4]
• Lord Albert Sidney Pelham-Clinton (22 December 1845 – 1 March 1884), who married Mrs Frances Evelyn Stotherd on 17 November 1870; they were divorced in 1877.

The marriage was unhappy and the Duke and Duchess were divorced in 1850, after a considerable scandal in which the Duchess eloped with Horatio Walpole, Lord Walpole, and had an illegitimate child by him. Newcastle died in October 1864, aged 53, and was succeeded in the dukedom by his eldest son, Henry.

His papers are now held at Manuscripts and Special Collections, The University of Nottingham.

• Clinton, British Columbia
• Clinton, South Australia