William Cowper, 1st Earl Cowper

The Right Honourable The Earl Cowper PC KC FRS
Portrait by Jonathan Richardson
Lord High Chancellor of Great Britain Lord High Steward for the trials of: List The Earl of Derwentwater The Lord Widdrington The Earl of Nithsdale The Earl of Carnwath The Viscount of Kenmure The Lord Nairne The Earl of Winton The Earl of Oxford and Mortimer
In office 4 May 1707 – 23 September 1710
Monarch	Anne
Preceded by	Himself (as Lord Keeper of the Great Seal of England)
Succeeded by	In Commission
In office 21 September 1714 – 15 April 1718
Monarchs	Anne George I
Preceded by	The Lord Harcourt
Succeeded by	In Commission
Lord Keeper of the Great Seal of England
In office 11 October 1705 – 4 May 1707
Monarch	Anne
Preceded by	Sir Nathan Wright
Succeeded by	Himself (as Lord High Chancellor of Great Britain)
Personal details
Born	c. 1665
Died	10 October 1723 Panshanger, Hertfordshire Great Britain
Children	William Clavering-Cowper Spencer Cowper
Parents	William Cowper (father) Sarah Cowper (mother)
Relatives	Spencer Cowper (brother) Judith Madan (niece)

William Cowper, 1st Earl Cowper, PC, KC, FRS (/ˈkuːpər/ KOO-pər; c. 1665 – 10 October 1723) was an English politician who became the first Lord High Chancellor of Great Britain. Cowper was the son of Sir William Cowper, 2nd Baronet, of Ratling Court, Kent, a Whig member of parliament of some mark in the two last Stuart reigns.