| Honorific-Prefix: | His Grace |
| The Duke of Newcastle | |
| Honorific-Suffix: | KG PC |
| Order1: | Secretary of State for War and the Colonies |
| Term Start1: | 28 December 1852 |
| Term End1: | 10 June 1854 |
| Monarch1: | Victoria |
| Primeminister1: | The Earl of Aberdeen |
| Predecessor1: | Sir John Pakington, Bt |
| Successor1: | Office abolished |
| Order2: | Secretary of State for War Secretary at War |
| Term Start2: | 12 June 1854 |
| Term End2: | 30 January 1855 |
| Monarch2: | Victoria |
| Primeminister2: | The Earl of Aberdeen |
| Predecessor2: | New office |
| Successor2: | The Lord Panmure |
| Order3: | Secretary of State for the Colonies |
| Term Start3: | 18 June 1859 |
| Term End3: | 7 April 1864 |
| Monarch3: | Victoria |
| Primeminister3: | The Viscount Palmerston |
| Predecessor3: | Sir Edward Lytton, Bt |
| Successor3: | Edward Cardwell |
| Order4: | Chief Secretary for Ireland |
| Term Start4: | 14 February 1846 |
| Term End4: | June 1846 |
| Monarch4: | Victoria |
| Primeminister4: | Sir Robert Peel |
| Predecessor4: | Sir Thomas Freemantle |
| Successor4: | Henry Labouchere |
| Birth Date: | 1811 5, df=yes |
| Nationality: | British |
| Party: | |
| Alma Mater: | University of Oxford |
| Spouse: | Lady Susan Douglas-Hamilton (1814–1889) |
| Children: | |
| Parents: |
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Henry Pelham Fiennes Pelham-Clinton, 5th Duke of Newcastle-under-Lyne, (22 May 181118 October 1864), styled Earl of Lincoln before 1851, was a British politician.
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.
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.
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.
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.
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.[1] 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]
Newcastle married Lady Susan Hamilton (9 June 181428 November 1889), daughter of Alexander Hamilton, 10th Duke of Hamilton, on 27 November 1832. They had five children:
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.
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