Mariclare Costello
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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
Credits
Indecent Proposal (1993)
as David's Mother
Ordinary People (1980)
as Audrey
The Adventures of Buckaroo Banzai Across the 8th Dimension (1984)
as Senator Cunningham
Nightmares (1983)
as Adele Cooney (segment "The Bishop of Battle")
American Harvest (1987)
as Mary Alice Duncan
Raid on Entebbe (1976)
as Gabrielle Krieger
The Execution of Private Slovik (1974)
as Antoinette Slovik
Let's Scare Jessica to Death (1971)
as Emily
Heart of a Champion: The Ray Mancini Story (1985)
as Ellen Mancini
Coward of the County (1981)
as Emma Spencer
All God's Children (1980)
as Winnie Naponic
She Said No (1990)
as Susan Finn
The Boy Who Drank Too Much (1980)
as Louise Carpenter
A Sensitive, Passionate Man (1977)
as Pat Morris
Victims for Victims: The Theresa Saldana Story (1984)
as Jane Bladow
Shadow of the Blair Witch (2000)
as Kathy Patterson
After the Fall (1974)
as Louise
Territorial Men (1976)
as Julia Baker
Appearances (1990)
as Rose
Conspiracy of Terror (1975)
as Mrs. Warnall
Going Where I've Never Been: The Photography of Diane Arbus (1972)
as Herself - Narrator
Pound (1970)
as Honky Killer's Wife
The Gun (1974)
as Beryl Strauss
Skeezer (1982)
as Barbara Thompson