George Bush Snr, US Ambassador at the UN
Who is he? Bush was US ambassador to the UN from 1971 to 1973 and director of the CIA in 1976-77, later serving two terms as vice-president to Ronald Reagan. In 1988, Bush was elected president, serving one term before being beaten in the 1992 election by Bill Clinton. Now 80, Bush still exerts a degree of influence over the politics of his son, George W, the current President.
When did speculation begin? The British-born author Adrian Havill claimed this week on a journalism website that Bush Snr was Deep Throat.
The case for: Havill says new research points the finger of suspicion at Bush. He says he became suspicious after President George W Bush, who is known to dislike the press, gave an unusual seven hours of interviews to Woodward for one of his recent books. He argues that Bush Snr had reason to dislike Nixon, who had urged him to leave a safe congressional seat for a Treasury position with the promise that he would later become Treasury Secretary.
According to Havill, Nixon did not deliver and Bush was given the task of heading the Republican National Committee. He says that although Bush was UN ambassador (i.e in New York) from 1971 to 1973 he returned to Washington at weekends when seven of the eight meetings with Woodward took place. "My examination of White House records at the National Archives show Bush attending many Washington state dinners and weekly cabinet meetings during that period," wrote Havill. "More importantly, he was in Washington nearly every weekend where he owned a house and where his son Neil attended St Alban's prep school."
http://news.independent.co.uk/world/americas/story.jsp?story=609187Or is he Frank Gelli, brother of Andreas Paul Gelli, aka Markus Wolf, ex-head of the Stasi:

My odds are 6/4ON FAV....