Jean Simmons: Jean Simmons. Actress: Guys and Dolls. Demure British beauty Jean Simmons was born January 31, 1929, in Crouch End, London. As a 14-year-old dance student, she was plucked from her school to play Margaret Lockwood's precocious sister in Give Us the Moon (1944). She had a small part as a harpist in the high-profile Caesar and Cleopatra (1945), produced by Gabriel Pascal, starring Vivien Leigh, and co-starring her future husband...