Henry Petty-Fitzmaurice, 3rd Marquess of Lansdowne

The Most Honourable The Marquess of Lansdowne KG PC FRS
Portrait by Henry Walton, c. 1805
Leader of the House of Lords
In office 6 July 1846 – 27 February 1852
Monarch	Victoria
Prime Minister	Lord John Russell
Preceded by	The Duke of Wellington
Succeeded by	The Earl of Derby
Lord President of the Council
In office 6 July 1846 – 27 February 1852
Monarch	Victoria
Prime Minister	Lord John Russell
Preceded by	The Duke of Buccleuch
Succeeded by	The Earl of Lonsdale
In office 23 April 1835 – 3 September 1841
Monarchs	William IV Victoria
Prime Minister	The Viscount Melbourne
Preceded by	The Earl of Rosslyn
Succeeded by	The Lord Wharncliffe
In office 22 November 1830 – 14 November 1834
Monarch	William IV
Prime Minister	The Earl Grey The Viscount Melbourne
Preceded by	The Earl Bathurst
Succeeded by	The Earl of Rosslyn
Secretary of State for the Home Department
In office 16 July 1827 – 22 January 1828
Monarch	George IV
Prime Minister	The Viscount Goderich
Preceded by	William Sturges Bourne
Succeeded by	Robert Peel
Chancellor of the Exchequer
In office 5 February 1806 – 26 March 1807
Monarch	George III
Prime Minister	The Lord Grenville
Preceded by	William Pitt the Younger
Succeeded by	Spencer Perceval
Member of the House of Lords Lord Temporal
In office 16 November 1809 – 31 January 1863 Hereditary Peerage
Preceded by	The 2nd Marquess of Lansdowne
Succeeded by	The 4th Marquess of Lansdowne
Member of Parliament for Cambridge University
In office 15 December 1806 – 27 April 1807
Preceded by	William Pitt the Younger
Succeeded by	Vicary Gibbs
Member of Parliament for Calne
In office 31 August 1802 – 24 October 1806
Preceded by	Sir Francis Baring, Bt
Succeeded by	Osborne Markham
Personal details
Born	(1780-07-02)2 July 1780 Lansdowne House, Mayfair, Middlesex, England
Died	31 January 1863(1863-01-31) (aged 82) Bowood House, Derry Hill, Wiltshire, England
Political party	Whig
Spouse(s)	Lady Louisa Fox-Strangways (1785–1851)
Children	William Louisa Henry
Parents	William Petty, 1st Marquess of Lansdowne Lady Louisa FitzPatrick
Alma mater	University of Edinburgh Trinity College, Cambridge

Henry Petty-Fitzmaurice, 3rd Marquess of Lansdowne, KG, PC, FRS (2 July 1780 – 31 January 1863), known as Lord Henry Petty from 1784 to 1809, was a British statesman. In a ministerial career spanning nearly half a century, he notably served as Home Secretary and Chancellor of the Exchequer and was three times Lord President of the Council.