Birth Date: May 21, 1924
Birth Place: Boston, Massachusetts, USA
Date of Death: March 8, 1999 / Age: 74
Location of Death: New York, New York, USA
Cause of Death: heart failure
Biography: Mary Margaret (Peggy) Cass (May 21, 1924 - March 8, 1999) was an actress and comedienne.
She was best known for her performance as Agnes Gooch in Auntie Mame on both Broadway and in the film version (1958), a role for which she received an Oscar nomination for Best Supporting Actress. Her son, Rob, has gone on to become a noted economist.
She was also a regular panelist on the television game show "To Tell the Truth".
She died of heart failure in New York City in 1999.