Mariclare Costello
Mariclare Costello
Person

Mariclare Costello

Actor 1936-02-06 Peoria, Illinois, USA

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
Data from TMDB
Indecent Proposal

Indecent Proposal

1993 · David's Mother

Ordinary People

Ordinary People

1980 · Audrey

The Adventures of Buckaroo Banzai Across the 8th Dimension

The Adventures of Buckaroo Banzai Across the 8th Dimension

1984 · Senator Cunningham

The Incredible Hulk

The Incredible Hulk

1977 · Kay Wallace

Murder, She Wrote

Murder, She Wrote

1984 · Cassie Latham Burns

Let's Scare Jessica to Death

Let's Scare Jessica to Death

1971 · Emily

Kojak

Kojak

1973 · Diane Gordon

Hart to Hart

Hart to Hart

1979 · Anita Boyer

The Waltons

The Waltons

1972 · Mrs. Rosemary Fordwick

Nightmares

Nightmares

1983 · Adele Cooney (segment "The Bishop of Battle")

Chicago Hope

Chicago Hope

1994 · Mother Mary Catherine

Raid on Entebbe

Raid on Entebbe

1976 · Gabrielle Krieger

Lou Grant

Lou Grant

1977 · Louise Larsen

Shadow of the Blair Witch

Shadow of the Blair Witch

2000 · Kathy Patterson

The Execution of Private Slovik

The Execution of Private Slovik

1974 · Antoinette Slovik

Coward of the County

Coward of the County

1981 · Emma Spencer

Victims for Victims: The Theresa Saldana Story

Victims for Victims: The Theresa Saldana Story

1984 · Jane Bladow

Pound

Pound

1970 · Honky Killer's Wife