1. Patrick George “Pat” Troughton was an English actor most widely known for his roles in fantasy, science fiction, and horror films, particularly in his role as the second incarnation of the Doctor in the long-running British science-fiction television series Doctor Who, which he played from 1966 to 1969; he reprised the role in 1973, 1983, and 1985.
2. Troughton was born on 25 March 1920 in Mill Hill, Middlesex, England, to Alec George Troughton, a solicitor, and Dorothy Evelyn Offord, who married in 1914 in Edmonton.
3. Troughton attended Mill Hill School and continued to live in Mill Hill for most of his life.
4. His brother A.R. Troughton shared the 1933 Walter Knox Prize for Chemistry with the future Nobel Prize winner Francis Crick, who also attended Mill Hill School.
5. Troughton later attended the Embassy School of Acting at Swiss Cottage, studying under Eileen Thorndike.
6. After his time at the Embassy School of Acting, Troughton won a scholarship to the Leighton Rallius Studios at the John Drew Memorial Theatre on Long Island in New York City.
7. When the Second World War began, he returned home on a Belgian ship which struck a sea mine and sank off the coast of Great Britain, Troughton escaping in a lifeboat.
8. His decorations included the 1939-45 Star, and Atlantic Star, and he was mentioned in dispatches.
9. He voiced Winston Smith in a 1965 BBC Home Service radio adaptation of Nineteen Eighty-Four.
10. Prior to Doctor Who he appeared in numerous TV shows, including The Count of Monte Cristo, Ivanhoe, Dial 999, Danger Man, Maigret, Compact, The Third Man, Crane, Detective, Sherlock Holmes, No Hiding Place, The Saint, Armchair Theatre, The Wednesday Play, Z-Cars, Adam Adamant Lives! and Softly, Softly.
11. The continued survival of the show depended on audiences accepting another actor in the role, despite the bold decision that the replacement would not be a Hartnell lookalike or soundalike.