Debbie Turner (born September 5, 1956) is an American actress and former child star who played the role of Marta von Trapp in the film The Sound of Music.Turner was reared in Arcadia, California, where she grew up as the third daughter of Canadian parents. Along with her older sisters Michele and Patricia, and younger brother Kel, she was active in television and commercials. In 1964 she won the role of Marta Von Trapp in The Sound of Music. Shortly after the film's debut, she left the film industry and returned to school to complete her education. Wikipedia