Mariclare Costello

Explore Mariclare Costello’s films. Browse credits and ratings, see where to watch, and find your next movie with ReelBot.

Acting

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

• Shadow of the Blair Witch (2000)
• Indecent Proposal (1993)
• She Said No (1990)
• Appearances (1990)
• American Harvest (1987)
• Heart of a Champion: The Ray Mancini Story (1985)
• Victims for Victims: The Theresa Saldana Story (1984)
• The Adventures of Buckaroo Banzai Across the 8th Dimension (1984)
• Nightmares (1983)
• Skeezer (1982)
• Coward of the County (1981)
• Ordinary People (1980)
• All God's Children (1980)
• The Boy Who Drank Too Much (1980)
• A Sensitive, Passionate Man (1977)
• Raid on Entebbe (1976)
• Territorial Men (1976)
• Conspiracy of Terror (1975)
• After the Fall (1974)
• The Gun (1974)
• The Execution of Private Slovik (1974)
• Going Where I've Never Been: The Photography of Diane Arbus (1972)
• Let's Scare Jessica to Death (1971)
• Pound (1970)