The star, real name Eileen Herlihy, passed away on Wednesday, aged 90.
Born in Scotland, Herlie began her career in the late 1940s and landed her first big role in the 1948 film adaptation of Shakespeare's Hamlet, opposite Laurence Olivier, and went on to secure parts in movies like 1958's She Didn't Say No! and 1962's Freud.
Herlie was also noted for her success on the Broadway and West End stages, where she starred opposite Richard Burton in a New York production of Hamlet in 1964. Her turn in Broadway musical Take Me Along also earned her a Tony Award nomination for Best Actress in a Musical in 1960.
But it was her role as Myrtle Lum Fargate in long-running U.S. TV drama All My Children that earned her the most recognition.
She joined the daytime soap in 1976 and was nominated four times for the Daytime Emmy Awards for Outstanding Actress in a Supporting Role in a Daytime Drama Series between 1983 and 1986.
In recent years, she made guest appearances on sister soaps like One Life To Live, and continued to play Fargate up until her final days.