Kathryn Grayson was born Zelma Kathryn Elisabeth Hedrick on February 9, 1922 in Winston-Salem, North Carolina.
At the age of 12, Kathryn Grayson discovered singing on the empty stage of the St. Louis Municipal Opera House by a janitor, who introduced her to Frances Marshall of the Chicago Civic Opera, who gave the twelve-year-old girl voice lessons.
In 1940, she was discovered by an MGM talent scout and was cast in her first film appearance in Andy Hardy's Private Secretary (1941) as the character's secretary Kathryn Land.
Kathryn Grayson's films included The Vanishing Virginian (1942), Thousands Cheer (1943), Anchors Aweigh (1945), The Kissing Bandit (1948), The Toast of New Orleans (1950), Show Boat (1951), Kiss Me Kate (1953), and The Vagabond King (1956).
In 1962, Kathryn Grayson appeared on Broadway in Camelot, her one and only Broadway performance.
On televison, Kathryn Grayson appeared in episdoes of Murder She Wrote, Baretta, Playhouse 90 and General Electric Theater.
Originally trained as an Opera singer, Kathryn Grayson appeared in Madame Butterfly (1959), La Traviata (1960), La Boheme (1960), and Orpheus in the Underworld (1983).
Kathryn Grayson has a Star on the Hollywood Walk of Fame for motion pictures.
Kathryn Grayson died on February 17, 2010 of natural causes, she was 88 years old.