American lyric soprano and actress, best known on screen as the voice of Princess Aurora in Walt Disney's animated feature Sleeping Beauty (1959). A beautiful blue-eyed blonde, Mary was born of Italian ancestry, the daughter of John and Hazel Costa. She trained at the Los Angeles Conservatory of Music, made a few early radio appearances on Edgar Bergen's show and was 'discovered' at the age of 22 by the composer Walter Schumann, who recruited her for the part of Princess Aurora. The film took si...
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