George Spencer, 4th Duke of Marlborough

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George Spencer, 4th Duke of Marlborough, painted by George Romney
George Spencer, 4th Duke of Marlborough, painted by George Romney

George Spencer, 4th Duke of Marlborough KG FRS (January 26, 1739January 29, 1817) was a British nobleman. Born the son of Charles Spencer, 3rd Duke of Marlborough, he was known as Marquess of Blandford until succeeding his father in 1758. His siblings were Charles, Diana, and Elizabeth. He was educated at Eton, and in 1755 entered the Coldstream Guards as an Ensign, becoming a Captain with the 20th Regiment of Foot in the following year.

After inheriting the dukedom, Marlborough took his seat in the House of Lords in 1760, becoming Lord Lieutenant of Oxfordshire in that same year. The following year, he bore the sceptre with the cross at the coronation of George III. In 1762, he was made Lord Chamberlain as well as a Privy Counsellor, and after a year succeeded this appointment as Lord Privy Seal. An amateur astronomer, he built a private observatory at his residence, Blenheim Palace. He kept up a lively scientific correspondence with Hans Count von Bruhl, another aristocratic dilettante in astronomy.

The Duke was made a Knight of the Garter in 1768, and was elected to the Royal Society in 1786. He married Lady Caroline Russell, daughter of John Russell, 4th Duke of Bedford, in 1762, by whom he had seven children:

  • Lady Caroline Spencer (1763–1813), married the 2nd Viscount Clifden and had issue.
  • Lady Elizabeth Spencer (d. 1812), married her cousin John Spencer (a grandson of the 3rd Duke of Marlborough) and had issue.
  • Lady Charlotte Spencer (d. 1802), married Rev. Edward Nares and had issue.
  • George Spencer, Marquess of Blandford (1766–1840)
  • Lady Anne Spencer (1773–1865), married the future 6th Earl of Shaftesbury and had issue.
  • Lady Amelia Sophia Spencer (d. 1829), married Henry Pytches Boyce.
  • Lord Francis Almeric Spencer (1779–1845)

He died at Blenheim Palace aged 78, and was buried there.

Reference: The Collected Correspondence of Baron Franz von Zach, Volume 3 (British Letters), 2008. Edited by Clifford J. Cunningham. Star Lab Press.

Honorary titles
Vacant
Title last held by
The Duke of Marlborough
Lord Lieutenant of Oxfordshire
1760–1817
Succeeded by
The Earl of Macclesfield
Political offices
Preceded by
The Duke of Devonshire
Lord Chamberlain
1762–1763
Succeeded by
The Earl Gower
Preceded by
The Duke of Bedford
Lord Privy Seal
1763–1765
Succeeded by
The Duke of Newcastle
Peerage of England
Preceded by
Charles Spencer
Duke of Marlborough
1758–1817
Succeeded by
George Spencer-Churchill
Languages