Carroll was born in Weedon Bec, Northamptonshire, to William and Catherine Carroll. His Roman Catholic parents named him after then-Pope Leo XIII. In 1897, his family lived in York, where his Irish-born father was a foreman in an ordnance store. In the 1901 census for West Ham, Essex, his occupation is listed as "wine trade clerk". In the 1911 census, he is living at the same address and described as a "dramatic agent".
Stage career
Carroll made his stage debut in 1912. His acting career was on hold during the First World War, when he served in the British Army.[2] Carroll saw action in France, Salonika and Palestine during the war; he was badly wounded while serving in the last.[2] After his recovery and discharge, he again took up acting in December 1919.[2]
Carroll is perhaps best known for his roles in six Alfred Hitchcock films: Rebecca (1940), Suspicion (1941), Spellbound (1945), The Paradine Case (1947), Strangers on a Train (1951) and North by Northwest (1959). He appeared in more Hitchcock films than anyone other than Clare Greet (1871–1939) (who appeared in seven) and Hitchcock himself, whose cameos were a trademark. As with earlier roles, he was often cast as doctors or other authority figures (such as the spymaster "Professor" in North by Northwest). Carroll eventually played a character based on Hitchcock himself in The Bad and the Beautiful (1952).
In addition to appearing as Rev. Mosby with actress Hayley Mills in The Parent Trap (1961), Carroll is remembered for his role as the frustrated banker haunted by the ghosts of George and Marion Kerby in the television series Topper (1953–1956), with co-stars Anne Jeffreys, Robert Sterling and Lee Patrick.[5]: 1097–1098 He appeared as the older Father Fitzgibbon from 1962 to 1963 in ABC's Going My Way, a series about two Roman Catholic priests at St. Dominic's parish in New York City. In 1963–1964, he portrayed John Miller in Channing on ABC.[5] Carroll subsequently starred as spymaster Alexander Waverly on The Man from U.N.C.L.E. (1964–1968).[5]: 650 Several U.N.C.L.E. films were derived from the series, and a spin-off television series, The Girl from U.N.C.L.E. in 1966.[5]: 393 He was one of the first actors to appear in two different television series as the same character.
Carroll appeared in spots on the first two regular episodes of Rowan & Martin's Laugh-In, the series that replaced U.N.C.L.E., and in fact appears as Mr. Waverly in the very first episode party scene where he is seen using a pen communicator to call Kuryakin to report that he believes he has found THRUSH headquarters.
