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The Best Actor Award at the 4th Cannes Film Festival in 1951 went to Michael Redgrave, a renowned British actor, for his outstanding performance in "The Browning Version," directed by Anthony Asquith. Redgrave's sensitive portrayal of Andrew Crocker-Harris, an aging and disillusioned schoolmaster, captivated the audience and critics alike, solidifying his position as one of the finest actors of his generation.