Mariclare Costello
Acting
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
Acting32
movieShadow of the Blair Witch
2000
Kathy Patterson
tvChicago Hope
1994
Mother Mary Catherine
movieIndecent Proposal
1993
David's Mother
movieShe Said No
1990
Susan Finn
movieAmerican Harvest
1987
Mary Alice Duncan
movieHeart of a Champion: The Ray Mancini Story
1985
Ellen Mancini
tvMurder, She Wrote
1984
Cassie Latham Burns
movieThe Adventures of Buckaroo Banzai Across the 8th Dimension
1984
Senator Cunningham
movieNightmares
1983
Adele Cooney (segment "The Bishop of Battle")
movieSkeezer
1982
Barbara Thompson
movieCoward of the County
1981
Emma Spencer
movieOrdinary People
1980
Audrey
movieAll God's Children
1980
Winnie Naponic
movieThe Boy Who Drank Too Much
1980
Louise Carpenter
tvHart to Hart
1979
Anita Boyer
tvThe Incredible Hulk
1977
Kay Wallace
tvLou Grant
1977
Louise Larsen
tvThe Fitzpatricks
1977
Maggie Fitzpatrick
movieA Sensitive, Passionate Man
1977
Pat Morris
movieRaid on Entebbe
1976
Gabrielle Krieger
movieTerritorial Men
1976
Julia Baker
movieConspiracy of Terror
1975
Mrs. Warnall
movieAfter the Fall
1974
Louise
movieThe Gun
1974
Beryl Strauss
movieThe Execution of Private Slovik
1974
Antoinette Slovik
tvKojak
1973
Diane Gordon
movieGoing Where I've Never Been: The Photography of Diane Arbus
1972
Herself - Narrator
tvThe Waltons
1972
Mrs. Rosemary Fordwick / Miss Rosemary Hunter / Mrs. Rosemary Fordwick (archive footage)
moviePound
1970
Honky Killer's Wife