William Eliot, 2nd Earl of St Germans
Portrait by Thomas Lawrence
Member of the British Parliament for St Germans
In office 1791–1802[1]
Member of the British Parliament for Liskeard
In office 1802–1823[1]
Under-Secretary of State for Foreign Affairs
In office 1804–1805[1]
Earl of St Germans
In office 17 November 1823[1] – 1845
Preceded by	John Eliot
Succeeded by	Edward Eliot
Personal details
Born	1 April 1767
Died	19 January 1845(1845-01-19) (aged 77)
Spouses	Lady Georgiana Augusta Leveson-Gower ​ ​ (m. 1797; died 1806)​ [2] Letitia A'Court ​ ​ (m. 1809; died 1810)​ [2] Charlotte Robinson ​ ​ (m. 1812; died 1813)​ [2] Susan Mordaunt ​ ​ (m. 1814; died 1830)​ [2]
Children	4, including Edward Eliot
Parents	Edward Craggs-Eliot, 1st Baron Eliot (father) Catherine Elliston (mother)
Relatives	John Eliot (brother) Edward James Eliot (brother) Edward Granville Eliot (son) Henry Lygon, 4th Earl Beauchamp (son-in-law)
Alma mater	Pembroke College, Cambridge
Occupation	military officer and diplomat[2]

William Eliot, 2nd Earl of St Germans (1 April 1767 – 19 January 1845), styled as Hon. William Eliot from 1784 until 1823, was a British peer, diplomat and politician.

Eliot was born at Port Eliot, Cornwall, the third son of Edward Craggs-Eliot, 1st Baron Eliot and his wife Catherine (née Elliston). He was educated at Pembroke College, Cambridge, taking an M.A. in 1786. He served as an officer with the East Cornwall Militia.^[1]

From November 1791 until 1793 he was a Secretary of Legation at Berlin, from 1793 to 1794 Secretary of Embassy and Minister Plenipotentiary at The Hague and from 1796 Minister Plenipotentiary to the Elector Palatine and to the Diet of Ratisbon. Eliot also sat as Tory Member of Parliament for St Germans from 1791 to 1802 and for Liskeard from 1802 to 1823. He served as a Lord of the Admiralty from 1800 to 1804, as Parliamentary Under-Secretary of State for Foreign Affairs from 1804 to 1805 and as one of the Lords Commissioners of the Treasury from 1807 to 1812.^[3]

In 1823, he succeeded his eldest brother John by special remainder as second Earl of St Germans and entered the House of Lords.

Lord St Germans was married and widowed four times.^[4]

Firstly, in November 1797^[1] at Trentham, Staffordshire, he married Lady Georgiana Augusta Leveson-Gower (13 April 1769 – 24 March 1806), daughter of Granville Leveson-Gower, 1st Marquess of Stafford. They had one son and three daughters:

• Edward Granville Eliot, 3rd Earl of St Germans (29 August 1798 – 7 October 1877), married Lady Jemima Cornwallis, daughter of Charles Cornwallis, 2nd Marquess Cornwallis
• Lady Caroline Georgina Eliot (27 July 1799 – April 1865), died unmarried
• Lady Susan Caroline Eliot (12 April 1801 – 15 January 1835), married Henry Lygon, 4th Earl Beauchamp
• Lady Charlotte Sophia Eliot (28 May 1802 – 8 July 1839), married Rev. George Martin, Canon of Exeter

After Lady Georgiana's death of tuberculosis,^[5] he married again on 13 February 1809^[1] at Heytesbury, Wiltshire, to Letitia à Court (9 August 1778 – 10 January 1810), daughter of Sir William Percy Ashe à Court. She died in childbirth along with their child.^[6]

On 7 March 1812^[1] at the Earl of Powis' House, Berkeley Square, London, he married the earl's niece Charlotte Robinson (26 March 1784 – 3 July 1813), daughter of John Robinson, MP of Denston Hall, and the Hon. Rebecca Clive (daughter of Robert Clive, 1st Baron Clive (Clive of India) and Margaret Clive). She also died in childbirth, with no surviving issue.^[7]

On 20 August 1814^[1] at Walton, Warwickshire, he married to Susan Mordaunt (15 December 1779 – 5 February 1830), daughter of Sir John Mordaunt, 7th Baronet, with no issue.

He died at Port Eliot in 1845, following an attack of paralysis. His only surviving daughter, Lady Caroline, was by his side. He was succeeded by his eldest son.^[4]

• Hansard 1803–2005: contributions in Parliament by the Earl of St Germans