Mariclare Costello

Born: 1936-02-06 in Peoria, Illinois, USA

Died: 2026-04-17

Known For: 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.

Filmography

2000

Shadow of the Blair Witch as Kathy Patterson

1994

Chicago Hope as Mother Mary Catherine

1993

Indecent Proposal as David's Mother

1990

She Said No as Susan Finn
Appearances as Rose

1987

American Harvest as Mary Alice Duncan

1985

Heart of a Champion: The Ray Mancini Story as Ellen Mancini

1984

Murder, She Wrote as Cassie Latham Burns
The Adventures of Buckaroo Banzai Across the 8th Dimension as Senator Cunningham
Victims for Victims: The Theresa Saldana Story as Jane Bladow

1983

Nightmares as Adele Cooney (segment "The Bishop of Battle")

1982

Skeezer as Barbara Thompson

1981

Coward of the County as Emma Spencer

1980

Ordinary People as Audrey
The Boy Who Drank Too Much as Louise Carpenter
All God's Children as Winnie Naponic

1979

Hart to Hart as Anita Boyer

1977

The Incredible Hulk as Kay Wallace
Lou Grant as Louise Larsen
The Fitzpatricks as Maggie Fitzpatrick
A Sensitive, Passionate Man as Pat Morris

1976

Raid on Entebbe as Gabrielle Krieger
Territorial Men as Julia Baker

1975

Conspiracy of Terror as Mrs. Warnall

1974

The Execution of Private Slovik as Antoinette Slovik
The Gun as Beryl Strauss
After the Fall as Louise

1973

Kojak as Diane Gordon

1972

The Waltons as Mrs. Rosemary Fordwick
Going Where I've Never Been: The Photography of Diane Arbus as Herself - Narrator

1971

Let's Scare Jessica to Death as Emily

1970

Pound as Honky Killer's Wife