Mariclare Costello
Acting
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.
🎬 Movies (20)
Shadow of the Blair Witch
2000
Kathy Patterson
Indecent Proposal
1993
David's Mother
She Said No
1990
Susan Finn
Appearances
1990
Rose
American Harvest
1987
Mary Alice Duncan
Heart of a Champion: The Ray Mancini Story
1985
Ellen Mancini
Victims for Victims: The Theresa Saldana Story
1984
Jane Bladow
The Adventures of Buckaroo Banzai Across the 8th Dimension
1984
Senator Cunningham
Nightmares
1983
Adele Cooney (segment "The Bishop of Battle")
Skeezer
1982
Barbara Thompson
Coward of the County
1981
Emma Spencer
Ordinary People
1980
Audrey
All God's Children
1980
Winnie Naponic
The Boy Who Drank Too Much
1980
Louise Carpenter
A Sensitive, Passionate Man
1977
Pat Morris
Raid on Entebbe
1976
Gabrielle Krieger
Territorial Men
1976
Julia Baker
Conspiracy of Terror
1975
Mrs. Warnall
After the Fall
1974
Louise
The Gun
1974
Beryl Strauss
📺 TV Shows (10)
Chicago Hope
1994
Mother Mary Catherine
Murder, She Wrote
1984
Cassie Latham Burns
Hart to Hart
1979
Anita Boyer
The Incredible Hulk
1977
Kay Wallace
Lou Grant
1977
Louise Larsen
The Fitzpatricks
1977
Maggie Fitzpatrick
Kojak
1973
Diane Gordon
The Waltons
1972
Mrs. Rosemary Fordwick
The Waltons
1972
Miss Rosemary Hunter
The Waltons
1972
Mrs. Rosemary Fordwick (archive footage)