William Wentworth-Fitzwilliam, 4th Earl Fitzwilliam, 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.
- Occupation
- politician
- Position held
- member of the House of Lords, Lord Lieutenant of the West Riding of Yorkshire, Lord Lieutenant of Ireland, Lord President of the Council
- Born
- May 30, 1748
