Two years at Eton College while my Dad was stationed in London. Most recent guys would be HRH Prince William and HRH Prince Harry. For a better list please see excerpt below taken from school handbook:
FAMOUS OLD ETONIANS
The most famous of all Old Etonians is perhaps the Duke of Wellington, victor of Waterloo and later Prime Minister. His elder brother, Marquess Wellesley, however, stands out as one of the most devoted Old Etonians and he is buried in the Chapel. He was Governor-General in India, Foreign Secretary and self-styled ‘Minister for Eton in the world at large’ besides being one of the greatest classical scholars of his day. He was seven years in the school. The galaxy of Old Etonian Prime Ministers is well known, nineteen in all, stretching from Walpole and Pitt the Elder to Macmillan and Douglas-Home. Equally impressive are the Old Etonian writers from Gray, Shelley and Fielding to Aldous Huxley and George Orwell, not forgetting the great economist Keynes. School Library has a fine collection of first editions of works by some recent Old Etonian writers such as Ian and Peter Fleming, A. C. Swinburne, Anthony Powell, Cyril Connolly, Osbert and Sacheverell Sitwell, and Robert Bridges. Political and literary friendships were often formed at Eton: the association of Thomas Grey and Horace Walpole is one of many examples. Old Etonian explorers include Sir Humphrey Gilbert, founder of the colony of Newfoundland, Captain Oates, who was on Scott’s expedition to the South Pole, and Sir Ranulph Fiennes. Among the scientists are Robert Boyle, Sir John Herschel, and Sir Joseph Banks. The late King Birendra of Nepal, crowned in 1975, was also at Eton, as was his son.
Distinguished figures in the armed services, the law, and the Church are legion. Two generations of Etonians were lost in war during the last 100 years: 129 in the Boer War, 1,157 in World War I, and 748 in World War II. There is a memorial in the Cloisters to Colonel H. Jones VC who was killed in the Falklands War. To this day, a significant number of boys take up commissions in the Army after leaving school or university. As regards the Church, it was almost certainly one of the Founder’s aims to create a better-educated secular priesthood, and a high proportion of Etonians in the 90 years before the Protestant Reformation became priests: four were to die Protestant martyrs and two were to die for the Catholic faith. One (Ralph Sherwin) became a saint.
As today, in the 18th century there were a small number of boys from America. Two of these, Thomas Lynch and Thomas Nelson, were signatories of the American Declaration of Independence.
See
www.etoncollege.com for more complete list.