David Cameron ... the son of stockbroker Ian Donald Cameron and his wife, Mary Fleur Mount, the second daughter of Sir William Mount, 2nd Baronet. ... Cameron's maternal grandfather, Alexander Geddes who had made a fortune in the grain business in Chicago and had returned to Scotland in the 1880s.
His father's family had a very long history in the world of finance: David Cameron's great-grandfather Arthur Francis Levita (brother of Sir Cecil Levita) of Panmure Gordon stockbrokers and his great-great-grandfather Sir Ewen Cameron, London head of the Hong Kong and Shanghai Bank played key roles in discussions led by the Rothschilds with the Japanese central banker (later Prime Minister) Takahashi Korekiyo concerning the selling of war bonds during the Russo-Japanese war.
Cameron is a direct descendant of King William IV (4th great-grandfather) and his mistress Dorothea Jordan (and thus 5th cousin, twice removed of Queen Elizabeth II).
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Education
Heatherdown Preparatory School
At the age of seven, Cameron attended the independent Heatherdown Preparatory School at Winkfield in Berkshire, which counted Prince Andrew and Prince Edward among its alumni.
Eton College
Cameron was educated at Eton College, often described as the most famous public school in the world, and traditionally referred to as "the chief nurse of England's statesmen". He followed his elder brother Alex who was three years above him;
Oxford
Cameron studied at the University of Oxford, where he read for a B.A. in Philosophy, Politics, and Economics (PPE) at Brasenose College.