Biography
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.
Acting credits 5 titles
Indecent Proposal
as David's Mother
Film
1993
6.4
The Adventures of Buckaroo Banzai Across the 8th Dimension
as Senator Cunningham
Film
1984
6.0
Nightmares
as Adele Cooney (segment "The Bishop of Battle")
Film
1983
5.9
Ordinary People
as Audrey
Film
1980
7.4
The Fitzpatricks
as Maggie Fitzpatrick
Series
1977–1978
7.5
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6.4
Film
Indecent Proposal
David's Mother
1993
5.9
Film
Nightmares
Adele Cooney (segment "The Bishop of Battle")
1983
7.4
Film
Ordinary People
Audrey
1980
6.0
Film
The Adventures of Buckaroo Banzai Across the 8th Dimension
Senator Cunningham
1984
7.5
Series
The Fitzpatricks
Maggie Fitzpatrick
1977–1978