William Cavendish, 3rd Duke of Devonshire

His Grace The Duke of Devonshire KG, PC
William Cavendish, 3rd Duke of Devonshire
Lord Lieutenant of Ireland
In office 1737–1744
Monarch	George II
Preceded by	The Duke of Dorset
Succeeded by	The Earl of Chesterfield
Lord Steward
In office 1733–1737
Monarch	George II
In office 1744–1749
Monarch	George II
Lord Privy Seal
In office 1731–1733
Monarch	George II
Succeeded by	The Viscount Lonsdale
Personal details
Born	26 September 1698
Died	5 December 1755
Nationality	British
Spouse	Catherine Hoskins
Children	7 (including William Cavendish, 4th Duke of Devonshire, Lord John Cavendish, and Lord Frederick Cavendish)
Parent(s)	William Cavendish, 2nd Duke of Devonshire Rachel Russell

William Cavendish, 3rd Duke of Devonshire, KG, PC (26 September 1698 – 5 December 1755) was a British nobleman and Whig politician who sat in the House of Commons from 1721 to 1729 when he inherited the Dukedom.