Sian Barbara Allen: Sian Barbara Allen. Actress: You'll Like My Mother. Sian Barbara Allen was born Barbara Susan Pokrass in Reading, Pennsylvania, on July 12, 1946. She studied at the Pasadena Playhouse from 1964 to 1965. Her performance as the mentally challenged Kathleen in You'll Like My Mother (1972), opposite Patty Duke, Rosemary Murphy, and Richard Thomas, earned her a 1973 Golden Globe nomination for "Most Promising New Actress." While working on 'You'll...
Known For: You'll Like My Mother (Kathleen), Billy Two Hats (Esther Spencer), Scream, Pretty Peggy (Peggy Johns), Baretta (Ellen)