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Francis Osborne, 5th Duke of Leeds

1751 – 1799

British politician

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About Francis Osborne, 5th Duke of Leeds

Lived 1751 – 1799 (aged 48). Francis Osborne, 5th Duke of Leeds was a British politician.

Francis Godolphin Osborne, 5th Duke of Leeds, (29 January 1751 – 31 January 1799), styled Marquess of Carmarthen until 1789, was a British politician. He notably served as Foreign Secretary under William Pitt the Younger from 1783 to 1791. He also was Governor of Scilly. In 1790, he was made a Knight of the Order of the Garter. As a statesman, he is generally regarded as a failure, and his deep hostility to the newly independent United States damaged relations between the two countries.

Background and education Carmarthen was the only surviving son of Thomas Osborne, 4th Duke of Leeds, by his wife, Lady Mary, daughter of Francis Godolphin, 2nd Earl of Godolphin, and Henrietta Godolphin, 2nd Duchess of Marlborough. He was educated at Westminster School and at Christ Church, Oxford.

Political career

Carmarthen was a member of parliament for Eye in 1774 and for Helston from 1774 to 1775; in 1776 having received a writ of acceleration as Baron Osborne, he entered the House of Lords, and in 1777 Lord Chamberlain of the Queen's Household and Captain of Deal Castle. In the House of Lords he was prominent as a determined foe of the prime minister, Lord North, who, after he had resigned his position as chamberlain, deprived him of the office of Lord Lieutenant of the East Riding of Yorkshire in 1780. He regained this, however, two years later.

Early in 1783, Carmarthen was selected as ambassador to France, but he did not take up this appointment, becoming instead Secretary of State for Foreign Affairs under William Pitt the Younger in December of the same year. Historian Jeremy Black says that in terms of foreign policy, Pitt and other leaders were disappointed with his performance as a minister. The Duke of Leeds, as he became upon his father's death in 1789, was anti-French but did not develop an active and aggressive foreign policy. Instead, King George III himself set the main lines of foreign policy before he became mentally disabled. Pitt's rejection of Leeds' anti-Russian policy was the final blow and he left office in April 1791.

Leeds, who was hostile to the newly independent United States, did nothing to foster good Anglo-American relations: two future U.S. Presidents, John Adams and Thomas Jefferson, who both served as the American ambassadors to Britain, complained about Leeds' obstructive attitude and "aversion to having anything to do with us". While Adams, who was somewhat of an Anglophile by inclination, was prepared to forgive and forget, Jefferson was not, and it can be argued that Leeds' only lasting achievement was to foster Jefferson's implacable hostility as President to the British government.

Family

Leeds married firstly in 1773 Lady Amelia Darcy, daughter of Robert Darcy, 4th Earl of Holderness on 29 November 1773. Lady Amelia became Baroness Darcy de Knayth and Baroness Conyers in her own right in 1778. They were divorced in 1779. Their marriage produced three children: George William Frederick Osborne, Marquess of Carmarthen (21 July 1775 – 10 July 1838), later 6th Duke of Leeds; married Lady Charlotte Townshend, daughter of the 1st Marquess Townshend, on 17 August 1797 and had issue. Lady Mary Henrietta Juliana Osborne (7 September 1776 – 21 October 1862); married Thomas Pelham, 2nd Earl of Chichester (28 April 1756 – 4 July 1826) in 1801 and had issue. Lord Francis Osborne (18 October 1777 – 15 February 1850), later 1st Baron Godolphin; married The Hon. Elizabeth Eden, third daughter of the 1st Baron Auckland, on 31 March 1800 and had issue.

He married secondly Catherine, daughter of Thomas Anguish, in 1788 and had two more children: Lord Sidney Godolphin Osborne (1789–1861); unmarried. Lady Catherine Anne Sarah Osborne (1791–1878); married Major John Whyte-Melville on 1 June 1819 and had issue.

Leeds died in London in January 1799, aged 48, and was buried in the Osborne family chapel at All Hallows Church, Harthill, South Yorkshire. He was succeeded in the dukedom by his eldest son from his first marriage, George Osborne, 6th Duke of Leeds. His second son from his first marriage, Lord Francis Osborne, was created Baron Godolphin in 1832. The dowager Duchess of Leeds died in October 1837, aged 73. Leeds's Political Memoranda were edited by Oscar Browning for the Camden Society in 1884, and there are eight volumes of his official correspondence in the British Museum.

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Important facts

Birth century
Occupation
Education
Christ Church, Westminster School, Christ Church, Oxford
Positions held
Secretary of State for Foreign and Commonwealth Affairs, Leader of the House of Lords, Member of the 14th Parliament of Great Britain, Member of the 13th Parliament of Great Britain
Awards
Fellow of the Royal Society; Order of the Garter; Baronet
Also known as
Francis Osborne

Family & relationships

Spouse
Amelia Osborne, Marchioness of Carmarthen
Spouse
Catherine Osborne, Duchess of Leeds
Child
Francis Osborne, 1st Baron Godolphin
Child
George Osborne, 6th Duke of Leeds
Child
Mary Pelham, Countess of Chichester
Parent
Mary Osborne, Duchess of Leeds
Parent
Thomas Osborne, 4th Duke of Leeds

People in Francis Osborne, 5th Duke of Leeds's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Francis Osborne, 5th Duke of Leeds's

Frequently asked questions

Who was Francis Osborne, 5th Duke of Leeds?

British politician (1751-1799)

When was Francis Osborne, 5th Duke of Leeds born?

Francis Osborne, 5th Duke of Leeds was born on 29 January 1751 in Thurso.

When did Francis Osborne, 5th Duke of Leeds die?

Francis Osborne, 5th Duke of Leeds died on 31 January 1799 in London.

What was Francis Osborne, 5th Duke of Leeds's occupation?

Francis Osborne, 5th Duke of Leeds was a politician.

What nationality was Francis Osborne, 5th Duke of Leeds?

Francis Osborne, 5th Duke of Leeds was British.

Sources & further reading

· Wikipedia: Francis Osborne, 5th Duke of Leeds

· Wikidata: Q333862

· DBpedia: Francis Osborne, 5th Duke of Leeds

Cite this page

APA: Biography.guide. (2026). Francis Osborne, 5th Duke of Leeds. https://biography.guide/francis-osborne-5th-duke-of-leeds/

MLA: "Francis Osborne, 5th Duke of Leeds." Biography.guide, https://biography.guide/francis-osborne-5th-duke-of-leeds/.

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Data last updated: 2026-09-28 · Spot an error? Report a correction.

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