William Cavendish (English politician, born 1783)

Portrait of the Children of Lord George Cavendish, 1790, by Sir Thomas Lawrence, showing William at right

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.

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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