William Fitzwilliam, 4th Earl Fitzwilliam

The Earl Fitzwilliam
Portrait by William Owen, 1817
Earl Fitzwilliam
In office
10 August 1756 – 8 February 1833
Preceded byWilliam Fitzwilliam
Succeeded byCharles Wentworth-Fitzwilliam
Lord Lieutenant of Ireland
In office
13 December 1794 – 13 March 1795
MonarchGeorge III
Prime MinisterWilliam Pitt the Younger
Preceded byThe Earl of Westmorland
Succeeded byThe Earl Camden
Lord President of the Council
In office
1 July – 17 December 1794
MonarchGeorge III
Prime MinisterWilliam Pitt the Younger
Preceded byThe Earl Camden
Succeeded byThe Earl of Mansfield
In office
19 February – 8 October 1806
MonarchGeorge III
Prime MinisterLord Grenville
Preceded byThe Earl Camden
Succeeded byViscount Sidmouth
Personal details
BornWilliam Wentworth-Fitzwilliam
(1748-05-30)30 May 1748
Died8 February 1833(1833-02-08) (aged 84)
NationalityBritish
Political partyWhig
Spouses
Lady Charlotte Ponsonby
(m. 1770; died 1822)
Hon. Louisa Molesworth
(m. 1823; died 1824)
ChildrenCharles Wentworth-Fitzwilliam, 5th Earl Fitzwilliam
Parents

William Wentworth-Fitzwilliam, 4th Earl Fitzwilliam, PC (30 May 1748 – 8 February 1833), styled Viscount Milton until 1756, was a British Whig statesman of the late 18th and early 19th centuries. In 1782 he inherited the estates of his uncle Charles Watson-Wentworth, 2nd Marquess of Rockingham, making him one of the richest people in Britain. He played a leading part in Whig politics until the 1820s.