Acting
Mariclare Costello
EN cinema · 24 credits
Born
6 February 1936
Died
17 April 2026 (aged 90)
Birthplace
Peoria, Illinois, USA
Also known as Mariclare Catherine Costello
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
Filmography
Shadow of the Blair Witch
as Kathy Patterson
Indecent Proposal
as David's Mother
Appearances
as Rose
She Said No
as Susan Finn
American Harvest
as Mary Alice Duncan
Heart of a Champion: The Ray Mancini Story
as Ellen Mancini
The Adventures of Buckaroo Banzai Across the 8th Dimension
as Senator Cunningham
Nightmares
as Adele Cooney (segment "The Bishop of Battle")
Skeezer
as Barbara Thompson
Coward of the County
as Emma Spencer
Ordinary People
as Audrey
The Boy Who Drank Too Much
as Louise Carpenter
All God's Children
as Winnie Naponic
A Sensitive, Passionate Man
as Pat Morris
Territorial Men
as Julia Baker
Raid on Entebbe
as Gabrielle Krieger
Conspiracy of Terror
as Mrs. Warnall
The Execution of Private Slovik
as Antoinette Slovik
The Gun
as Beryl Strauss
After the Fall
as Louise
Going Where I've Never Been: The Photography of Diane Arbus
as Herself - Narrator
Pound
as Honky Killer's Wife