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