Mariclare Costello

Born: 1936-02-06, Peoria, Illinois, USA

Died: 2026-04-17

Biography

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.

Filmography

• Chicago Hope (1994)
• Murder, She Wrote (1984)
• The Waltons (1972)
• Lou Grant (1977)
• Hart to Hart (1979)
• Kojak (1973)
• Indecent Proposal (1993)
• Ordinary People (1980)
• The Adventures of Buckaroo Banzai Across the 8th Dimension (1984)
• Nightmares (1983)
• American Harvest (1987)
• The Execution of Private Slovik (1974)
• Raid on Entebbe (1976)
• Let's Scare Jessica to Death (1971)
• Heart of a Champion: The Ray Mancini Story (1985)
• The Boy Who Drank Too Much (1980)
• A Sensitive, Passionate Man (1977)
• Conspiracy of Terror (1975)
• Shadow of the Blair Witch (2000)
• Coward of the County (1981)
• Victims for Victims: The Theresa Saldana Story (1984)
• All God's Children (1980)
• Skeezer (1982)
• Appearances (1990)
• Territorial Men (1976)
• Going Where I've Never Been: The Photography of Diane Arbus (1972)