Acting
Mariclare Costello
Born Feb 6, 1936 · Peoria, Illinois, USA · Died Apr 17, 2026
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.
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Acting
Shadow of the Blair Witch
2000
Mystery · Horror · TV Movie
Chicago Hope
1994
Soap · Drama
Indecent Proposal
1993
Romance · Drama
She Said No
1990
TV Movie · Crime · Drama
Appearances
1990
Drama · TV Movie
American Harvest
1987
Drama
Heart of a Champion: The Ray Mancini Story
1985
Drama · TV Movie
Victims for Victims: The Theresa Saldana Story
1984
Drama · TV Movie
Murder, She Wrote
1984
Mystery · Crime · Drama
The Adventures of Buckaroo Banzai Across the 8th Dimension
1984
Science Fiction · Comedy · Adventure
Nightmares
1983
Horror · Science Fiction
Skeezer
1982
Drama
Coward of the County
1981
Drama · TV Movie
Ordinary People
1980
Drama
All God's Children
1980
Drama · TV Movie
The Boy Who Drank Too Much
1980
TV Movie · Drama
Hart to Hart
1979
Action & Adventure · Crime · Mystery
The Incredible Hulk
1977
Sci-Fi & Fantasy · Action & Adventure · Drama
Lou Grant
1977
Comedy · Drama
The Fitzpatricks
1977
Drama
A Sensitive, Passionate Man
1977
TV Movie · Drama
Raid on Entebbe
1976
Drama · Thriller · TV Movie
Territorial Men
1976
Family · Western · Adventure
Conspiracy of Terror
1975
Drama · TV Movie · Comedy
After the Fall
1974
Drama · TV Movie
The Gun
1974
Drama · TV Movie
The Execution of Private Slovik
1974
War · Drama · TV Movie
Kojak
1973
Crime · Drama · Mystery
Going Where I've Never Been: The Photography of Diane Arbus
1972
TV Movie · Documentary
The Waltons
1972
Drama
Let's Scare Jessica to Death
1971
Horror · Mystery · Drama
Pound
1970
Comedy