Charles Lennox, 3rd Duke of Richmond

His Grace The Duke of Richmond KG PC FRS
Portrait circa 1777
Southern Secretary
In office 23 May 1766 – 29 July 1766
Monarch	George III
Prime Minister	The Marquess of Rockingham
Preceded by	Henry Conway
Succeeded by	The Earl of Shelburne
Personal details
Born	(1735-02-22)22 February 1735 Westminster, London, England
Died	29 December 1806(1806-12-29) (aged 71) Goodwood, Sussex, England
Resting place	Chichester Cathedral
Spouse	Mary Bruce
Parent(s)	Charles Lennox, 2nd Duke of Richmond Sarah Cadogan
Awards	Knight of the Garter
Military service
Allegiance	Kingdom of Great Britain
Branch/service	Royal Army
Years of service	1752–1806
Rank	Field Marshal
Commands	33rd Regiment of Foot 72nd Regiment of Foot Sussex Militia
Battles/wars	Seven Years' War

Field Marshal Charles Lennox, 3rd Duke of Richmond, 3rd Duke of Lennox, 3rd Duke of Aubigny, KG, PC, FRS (22 February 1735 – 29 December 1806), styled Earl of March until 1750, of Goodwood House in Sussex and of Richmond House in London, was a British Army officer and politician. He associated with the Rockingham Whigs and rose to hold the post of Southern Secretary for a brief period. He was noteworthy for his support for the colonists during the American Revolutionary War, his support for a policy of concession in Ireland and his advanced views on the issue of parliamentary reform. He is believed by many to be the source of the second parchment copy of the US Declaration of Independence, known as the 'Sussex Declaration'. He went on to be a reforming Master-General of the Ordnance first in the Rockingham ministry and then in the ministry of William Pitt the Younger.