William Cavendish (10 January 1783 – 15 January 1812) was an English politician, the son of Lord George Cavendish, later Earl of Burlington.
He married Louisa O'Callaghan (d. 1863), daughter of Cornelius O'Callaghan, 1st Baron Lismore, on 18 July 1807. They had four children:
(Upon William's accession as Duke of Devonshire in 1858, his siblings were granted precedence of the children of a duke by Royal Warrant.)
William predeceased his father in 1812; his father was subsequently created Earl of Burlington in 1831, a title which passed to William's son William, who also succeeded as Duke of Devonshire.
| Parliament of the United Kingdom | ||
|---|---|---|
| Preceded by James Du Pre Robert Bent |
Member for Aylesbury 1804–1806 With: James Du Pre |
Succeeded by Sir George Nugent, Bt George Henry Compton Cavendish |
| Preceded by Edward Coke George Walpole |
Member for Derby 1806–1812 With: Edward Coke 1806–1807 & 1807–1812 Thomas Coke 1807 |
Succeeded by Edward Coke Henry Frederick Compton Cavendish |