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Mariclare Costello
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
6.4Indecent Proposal
1993
6.0The Adventures of Buckaroo Banzai Across the 8th Dimension
1984
7.5Ordinary People
1980
5.9Nightmares
1983
9.0American Harvest
1987
6.2Let's Scare Jessica to Death
1971
6.0Heart of a Champion: The Ray Mancini Story
1985
6.0Raid on Entebbe
1976
7.4The Execution of Private Slovik
1974
7.7She Said No
1990
6.5Coward of the County
1981
5.5A Sensitive, Passionate Man
1977
6.7Victims for Victims: The Theresa Saldana Story
1984
4.8Pound
1970
5.5Shadow of the Blair Witch
2000
8.7The Gun
1974
6.5All God's Children
1980
4.7The Boy Who Drank Too Much
1980
7.0Conspiracy of Terror
1975
10.0Skeezer
1982