George Hamilton-Gordon, 4th Earl of Aberdeen KG KT FRSE FRS PC FSA(Scot) (28 January 1784 – 14 December 1860), styled Lord Haddo from 1791 to 1801, was a British politician and landowner, successively a Tory, Conservative and Peelite, who served as Prime Minister of the United Kingdom from 1852 until 1855.
Born in Edinburgh on 28 January 1784, he was the eldest son of George Gordon, Lord Haddo, son of George Gordon, 3rd Earl of Aberdeen. His mother was Charlotte, youngest daughter of William Baird of Newbyth. He lost his father in 1791 and his mother in 1795 and was brought up by Henry Dundas, 1st Viscount Melville. He was educated at Harrow, and St John's College, Cambridge, where he graduated with a Master of Arts in 1804. Before this, however, he had become Earl of Aberdeen on his grandfather's death in 1801, and had travelled all over Europe. On his return to England, he founded the Athenian Society. In 1805, he married Lady Catherine Elizabeth, daughter of John Hamilton, 1st Marquess of Abercorn.
In December 1805 Lord Aberdeen took his seat as a Tory Scottish representative peer in the House of Lords. In 1808, he was created a Knight of the Thistle. Following the death of his