Mariclare Costello: key obituary facts
Is Mariclare Costello dead? Yes. Mariclare Costello died on April 17, 2026, at age 90.
Cause of death: Mariclare Costello's cause of death has not been publicly confirmed.
What was Mariclare Costello known for?
They was known as American actress (Let's Scare Jessica to Death , The Fitzpatricks, The Waltons).
More about Mariclare Costello
Occupation: Actress.
Years active: 1967–2002.
Mariclare Costello, an American actress, died on April 17, 2026, at age 90.
She was known for her roles in the cult horror film “Let’s Scare Jessica to Death” and the television series “The Waltons” and “The Fitzpatricks.” Costello’s most notable role was Rosemary Hunter Fordwick on “The Waltons,” which she played from 1972 to 1977. In 1977, she portrayed matriarch Maggie Fitzpatrick on “The Fitzpatricks.” She was a lifetime member of The Actors Studio and was active from 1967 to 2002.
Mariclare Costello, 90, American actress (Let’s Scare Jessica to Death , The Fitzpatricks, The Waltons).