Eleanor Parker, best known for her role in the 1965 film The Sound of Music, passed away on Monday at the age of 91, according to Variety.
Parker, who was born in Ohio in 1922, made her acting debut at age 19 after moving to California after finishing high school.
Over the span of her 50-year acting career, Parker acted in dozens of films and TV series, most notably starring as the Baroness who loses out to Maria (Julie Andrews) in the cherished 1965 film The Sound of Music.
In addition to her role in The Sound of Music, Parker was known for co-starring alongside Kirk Douglas in 1951 crime-drama Detective Story and Frank Sinatra in the 1955 drama The Man with the Golden Arm.
She received a trio of Oscar nominations for her performances in Detective Story as well the 1950 crime-drama Caged and the 1955 drama Interrupted Melody.
After five decades in the acting, Parker retired in 1991 following the TV movie Dead on the Money.
Variety reports that Parker passed away Monday morning at a medical facility in Palm Springs, Calif. due to complications from pneumonia.
Parker's fourth husband, with whom she was married for 35 years, passed away in 2001. She is survived by her sons Richard and Paul and daughters Sharon and Susan.