Earl FitzWilliam
Earl FitzWilliam is a title in the Peerages of Ireland and of Great Britain.
The FitzWilliam family claim descent from William the Conqueror. William FitzWilliam of Milton Manor in Northamptonshire, grandson of Sir William Fitzwilliam, Lord Deputy of Ireland, was created Baron FitzWilliam in the Peerage of Ireland in 1620.
In 1716 the 3rd Baron FitzWilliam was created Earl FitzWilliam, along with the subsidiary title Viscount Milton, in the Peerage of Ireland.
In 1742, the 3rd Earl was created Lord FitzWilliam, Baron of Milton in the County of Northampton, in the Peerage of Great Britain, and in 1746 was further created Earl FitzWilliam, of Norborough in the County of Northampton, and Viscount Milton, of Milton in the County of Northampton, both also in the Peerage of Great Britain.
All the peerages became extinct upon the death of the 10th Earl (the 8th Earl in the Peerage of Great Britain) in 1979.
The eldest son of the Earl FitzWilliam bore the courtesy title Viscount Milton.
Barons FitzWilliam (1620)
- William FitzWilliam, 1st Baron FitzWilliam (d.1644)
- William FitzWilliam, 2nd Baron FitzWilliam (c.1609-1658)
- William FitzWilliam, 3rd Baron FitzWilliam (1643-1719), created Earl FitzWilliam in 1716
Earls FitzWilliam (1716, 1746)
- William FitzWilliam, 1st Earl FitzWilliam (1643-1719)
- John FitzWilliam, 2nd Earl FitzWilliam (1681-1728)
- William FitzWilliam, 3rd Earl FitzWilliam (1719-1756) (created Earl FitzWilliam in the Peerage of Great Britain in 1746)
- William FitzWilliam, 4th Earl FitzWilliam (1748-1833)
- Charles William Wentworth-FitzWilliam, 5th Earl FitzWilliam (1786-1857)
- William Thomas Spencer Wentworth-FitzWilliam, 6th Earl FitzWilliam (1815-1902)
- William Charles de Meuron Wentworth-FitzWilliam, 7th Earl FitzWilliam (1872-1943)
- William Henry Lawrence Peter Wentworth-FitzWilliam, 8th Earl FitzWilliam (1910-1948)
- Eric Spencer Wentworth-FitzWilliam, 9th Earl FitzWilliam (1883-1952)
- William Thomas George Wentworth-FitzWilliam, 10th Earl FitzWilliam (1904-1979)