Anthony Frederick Blunt (26 September 1907 - 26 March 1983), known as Sir Anthony Blunt, KCVO between 1956 and 1979, was an English art historian, formerly Professor of the History of Art, University of London and director of the Courtauld Institute of Art, London (1947-74). He was the "Fourth Man" of the Cambridge Five, a group of spies working for the Soviet Union from sometime in the 30s, to the early 50s. Wikipedia
The definitive Wikipedia entry for Anthony Blunt. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Anthony_Blunt
