General Sir Harold Wharton was a war hero of World War II, leader of the English Socialist Party (Ingsoc), and later Dictator of Airstrip One (England) from 1945 to 1951 under the name Big Brother.
History
Harold "Harry" Wharton was an orphan who was raised by a "beastly" colonel and became a student of Greyfriars School. He was Captain of the Lover Forth Remove and an avid cricketer, and was known for being a "black sheep." He was a classmate of Billy Bunter, whose sister Bessie Bunter later married to Wharton. Wharton, along with Robert "Bob" Cherry and John "Johnny Bull" Night, were members of the Famous Five, a tight-knit group of students who, along with Billy and certain other schoolmates, had many adventures and defeated many adversaries. At some point Wharton fell into association with communists due to his encounter with Herbert Skimpole of Saint James College
Wharton soon entered into military service during World War II, subsequently rising to the rank of General, and became a war hero. By 1945 Wharton had entered politics, and he soon rose to become the de facto head of Ingsoc, which eventually lead to him becoming dictator of the United Kingdom, during which time he was commonly known by the alias "Big Brother."
On November 27, 1951, Wharton was secretly assassinated in a plot orchestrated by Gerald O'Brien and Robert Cherry, the former becoming Wharton's successor. Wharton's death was covered up as a heart attack. O'Brien, however, was not able to retain his control over Ingsoc in which the party collapsed and Wharton's legacy was rendered obsolete.
Source material
Harold Wharton is Harry Wharton from Charles Hamilton's Greyfriars School series, and alias Big Brother is from George Orwell's 1984. The change of Big Brother's rule of England from 1984 to the 1950s is based on Orwell's original title of the novel being 1948. In 1984, Big Brother is possibly not real, though this is never fully clarified.