Mariclare Costello
Acting
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.
Filmography
Shadow of the Blair Witch
2000 · Movie
Chicago Hope
1994 · Series
Indecent Proposal
1993 · Movie
She Said No
1990 · Movie
Appearances
1990 · Movie
American Harvest
1987 · Movie
Heart of a Champion: The Ray Mancini Story
1985 · Movie
Victims for Victims: The Theresa Saldana Story
1984 · Movie
Murder, She Wrote
1984 · Series
The Adventures of Buckaroo Banzai Across the 8th Dimension
1984 · Movie
Nightmares
1983 · Movie
Skeezer
1982 · Movie
Coward of the County
1981 · Movie
Ordinary People
1980 · Movie
All God's Children
1980 · Movie
The Boy Who Drank Too Much
1980 · Movie
Hart to Hart
1979 · Series
The Incredible Hulk
1977 · Series
Lou Grant
1977 · Series
The Fitzpatricks
1977 · Series
A Sensitive, Passionate Man
1977 · Movie
Raid on Entebbe
1976 · Movie
Territorial Men
1976 · Movie
Conspiracy of Terror
1975 · Movie
After the Fall
1974 · Movie
The Gun
1974 · Movie
The Execution of Private Slovik
1974 · Movie
Kojak
1973 · Series
Going Where I've Never Been: The Photography of Diane Arbus
1972 · Movie
The Waltons
1972 · Series
Let's Scare Jessica to Death
1971 · Movie
Pound
1970 · Movie