The role of Mother Superior was originated on Broadway by Geraldine Page. Page was passed over for the film version, in favor of Anne Bancroft. Bancroft was nominated for an Academy Award, but lost, ironically, to Page.
Despite the fact that her character is a chain-smoker, in real life, Jane Fonda is a dedicated non-smoker. For this role, she smoked reed cigarettes - non-toxic, tobacco-free cigarettes made from cattail reeds, which are sold in health stores to people who are trying to quit smoking.
Anne Pitoniak who portrays Jane Fonda's mother in Agnes of God (1985), was the original Mother Miriam Ruth when the play was first produced at Actors Theatre of Louisville.
The original Broadway production of "Agnes of God" by John Pielmeier opened at the Music Box Theater on March 30, 1982, ran for 599 performances and was nominated for two 1982 Tony Awards for acting.
Amanda Plummer won the 1982 Tony Award (New York City) for Supporting or Features Actress in a Drama for "Agnes of God".