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Prime Ministers of the United Kingdom (1721-1979)
Events
Robert Walpole
4 April 1721 - 15 May 1730
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Robert Walpole, 1st Earl of Oxford, KG, KB, PC
Electoral mandate: 1722
MP for King's Lynn; Party: Whig; Sovereign: George I, George II
Ministerial portfolios held during tenure: First Lord of the Treasury, Chancellor of the Exchequer, Leader of the House of Commons
Robert Walpole
15 May 1730 - 11 February 1742
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Robert Walpole, 1st Earl of Oxford, KG, KB, PC
Electoral mandates: 1727, 1734, 1741
Party: Whig; Sovereign: George II
Ministerial portfolios held during tenure: First Lord of the Treasury, Chancellor of the Exchequer, Leader of the House of Commons
Earl of Wilmington
16 February 1742 - 2 July 1743
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Spencer Compton, 1st Earl of Wilmington, KG, KB, PC
Party: Whig; Sovereign: George II
Ministerial portfolios held during tenure: First Lord of the Treasury
Henry Pelham
27 August 1743 - 10 February 1746
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Henry Pelham, PC, FRS
MP for Sussex; Party: Whig; Sovereign: George II
Ministerial portfolios held during tenure: First Lord of the Treasury, Chancellor of the Exchequer, Leader of the House of Commons
Henry Pelham
12 February 1746 - 6 March 1754
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Henry Pelham, PC, FRS
Electoral mandate: 1747
MP for Sussex; Party: Whig; Sovereign: George II
Ministerial portfolios held during tenure: First Lord of the Treasury, Chancellor of the Exchequer, Leader of the House of Commons
Duke of Newcastle
16 March 1754 - 16 November 1756
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Thomas Pelham-Holles, 1st Duke of Newcastle upon Tyne and 1st Duke of Newcastle-under-Lyme, KG, PC, FRS
Electoral mandate: 1754
Party: Whig; Sovereign: George II
Ministerial portfolios held during tenure: First Lord of the Treasury, Leader of the House of Lords
Duke of Devonshire
16 November 1756 - 25 June 1757
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William Cavendish, 4th Duke of Devonshire, KG, PC
Party: Whig; Sovereign: George II
Ministerial portfolios held during tenure: First Lord of the Treasury, Leader of the House of Lords
Duke of Newcastle
2 July 1757 - 26 May 1762
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Thomas Pelham-Holles, 1st Duke of Newcastle upon Tyne and 1st Duke of Newcastle-under-Lyme, KG, PC, FRS
Electoral mandate: 1761
Party: Whig; Sovereign: George II, George III
Ministerial portfolios held during tenure: First Lord of the Treasury, Leader of the House of Lords
Earl of Bute
26 May 1762 - 8 April 1763
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John Stuart, 3rd Earl of Bute, KG, PC
Party: Tory; Sovereign: George III
Ministerial portfolios held during tenure: First Lord of the Treasury, Leader of the House of Lords
George Grenville
16 April 1763 - 13 July 1765
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MP for Buckingham; Party: Whig (Grenvillite); Sovereign: George III
Ministerial portfolios held during tenure: First Lord of the Treasury, Chancellor of the Exchequer, Leader of the House of Commons
Marquess of Rockingham
13 July 1765 - 30 July 1766
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Charles Watson-Wentworth, 2nd Marquess of Rockingham, KG, PC, FRS
Party: Whigs (Rockingham); Sovereign: George III
Ministerial portfolios held during tenure: First Lord of the Treasury, Leader of the House of Lords
Earl of Chatham
30 July 1766 - 14 October 1768
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William Pitt, 1st Earl of Chatham, PC, FRS
Electoral mandate: 1768
MP for Bath; Party: Whig (Chathamite); Sovereign: George III
Elevated to the Peerage of Great Britain on 4 August 1766
Ministerial portfolios held during tenure: Lord Keeper of the Privy Seal
Duke of Grafton
14 October 1768 - 28 January 1770
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Augustus Henry FitzRoy, 3rd Duke of Grafton, KG, PC
Party: Whigs (Chathamite); Sovereign: George III
Ministerial portfolios held during tenure: First Lord of the Treasury, Leader of the House of Lords