Mariclare Costello
Acting
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.
Notable Works
Prominent titles featuring Mariclare Costello
Nightmares
1983
Filmography
Acting (24)
2000
Shadow of the Blair Witchas Kathy Patterson
5.7
1993
Indecent Proposalas David's Mother
6.4
1990
She Said Noas Susan Finn
7.7
1990
Appearancesas Rose
10.0
1987
American Harvestas Mary Alice Duncan
9.0
1985
Heart of a Champion: The Ray Mancini Storyas Ellen Mancini
6.0
1984
Victims for Victims: The Theresa Saldana Storyas Jane Bladow
6.7
1984
The Adventures of Buckaroo Banzai Across the 8th Dimensionas Senator Cunningham
6.0
1983
Nightmaresas Adele Cooney (segment "The Bishop of Battle")
5.7
1982
Skeezeras Barbara Thompson
10.0
1981
Coward of the Countyas Emma Spencer
6.5
1980
Ordinary Peopleas Audrey
7.4
1980
All God's Childrenas Winnie Naponic
6.5
1980
The Boy Who Drank Too Muchas Louise Carpenter
4.7
1977
A Sensitive, Passionate Manas Pat Morris
5.5
1976
Raid on Entebbeas Gabrielle Krieger
6.0
1976
Territorial Menas Julia Baker
1975
Conspiracy of Terroras Mrs. Warnall
7.0
1974
After the Fallas Louise
8.0
1974
The Gunas Beryl Strauss
8.7
1974
The Execution of Private Slovikas Antoinette Slovik
7.4
1972
Going Where I've Never Been: The Photography of Diane Arbusas Herself - Narrator
6.0
1971
Let's Scare Jessica to Deathas Emily
6.2
1970
Poundas Honky Killer's Wife
4.8