
Mariclare Costello
- Known for
- Acting
- Born
- February 6, 1936
- Died
- April 17, 2026 (aged 90)
- Birthplace
- Peoria, Illinois, USA
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.
Known For
Filmography

Shadow of the Blair Witch
Movie · as Kathy Patterson

Chicago Hope
TV · as Mother Mary Catherine · 1 ep

Indecent Proposal
Movie · as David's Mother

Appearances
Movie · as Rose

She Said No
Movie · as Susan Finn

American Harvest
Movie · as Mary Alice Duncan

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

The Adventures of Buckaroo Banzai Across the 8th Dimension
Movie · as Senator Cunningham

Victims for Victims: The Theresa Saldana Story
Movie · as Jane Bladow

Murder, She Wrote
TV · as Cassie Latham Burns · 1 ep

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

Skeezer
Movie · as Barbara Thompson

Coward of the County
Movie · as Emma Spencer

Ordinary People
Movie · as Audrey

The Boy Who Drank Too Much
Movie · as Louise Carpenter

All God's Children
Movie · as Winnie Naponic

Hart to Hart
TV · as Anita Boyer · 1 ep

A Sensitive, Passionate Man
Movie · as Pat Morris

The Fitzpatricks
TV · as Maggie Fitzpatrick · 13 eps

Lou Grant
TV · as Louise Larsen · 1 ep

The Incredible Hulk
TV · as Kay Wallace · 1 ep

Territorial Men
Movie · as Julia Baker

Raid on Entebbe
Movie · as Gabrielle Krieger

Conspiracy of Terror
Movie · as Mrs. Warnall

The Execution of Private Slovik
Movie · as Antoinette Slovik

The Gun
Movie · as Beryl Strauss

After the Fall
Movie · as Louise

Kojak
TV · as Diane Gordon · 1 ep

Going Where I've Never Been: The Photography of Diane Arbus
Movie · as Herself - Narrator

The Waltons
TV · as Mrs. Rosemary Fordwick, Miss Rosemary Hunter, Mrs. Rosemary Fordwick (archive footage) · 4 eps

Let's Scare Jessica to Death
Movie · as Emily

Pound
Movie · as Honky Killer's Wife