Actress-singer, who portrayed Fiona MacLaren in the original Broadway production of Lerner & Loewe's 'Brigadoon' (1947). In the film Ziegfeld Follies (1945), she sang a duet with the Metropolitan Opera tenor 'James Melton'.
She first sang on radio at the age of eight. Marion was later 'discovered' by the director Robert Z. Leonard, who heard her sing at a party. Leonard subsequently helped her to be signed under contract with MGM.