Mariclare Costello
Mariclare Catherine Costello (February 3, 1936 – April 17, 2026) was an American actress. She was a lifetime member of The Actors Studio. Costello's most notable role was that of Rosemary Hunter Fordwick on the television series The Waltons, from 1972 to 1977. In 1977, after her role on The Waltons, she played matriarch Maggie Fitzpatrick on the short-lived drama show The Fitzpatricks.
- Known for
- Acting
- Born
- 1936-02-06 · Peoria, Illinois, USA
- Died
- 2026-04-17
Known for
- Indecent Proposal (1993) — David's Mother
- Ordinary People (1980) — Audrey
- The Adventures of Buckaroo Banzai Across the 8th Dimension (1984) — Senator Cunningham
- The Incredible Hulk (1977) — Kay Wallace
- Murder, She Wrote (1984) — Cassie Latham Burns
- Let's Scare Jessica to Death (1971) — Emily
- Kojak (1973) — Diane Gordon
- Hart to Hart (1979) — Anita Boyer
- The Waltons (1972) — Mrs. Rosemary Fordwick
- Nightmares (1983) — Adele Cooney (segment "The Bishop of Battle")
- Chicago Hope (1994) — Mother Mary Catherine
- Raid on Entebbe (1976) — Gabrielle Krieger
- Lou Grant (1977) — Louise Larsen
- Shadow of the Blair Witch (2000) — Kathy Patterson
- The Execution of Private Slovik (1974) — Antoinette Slovik
- Coward of the County (1981) — Emma Spencer