Mariclare Costello
Feb 6, 1936 — Apr 17, 2026 (90 years)
Peoria, Illinois, USA
10 Movies
7 Series
Originally from Peoria, Illinois, USA, Mariclare Costello works as an actress. Their performance in Indecent Proposal as David's Mother remains one of the most memorable of their filmography. Other notable titles in their filmography include Ordinary People and The Adventures of Buckaroo Banzai Across the 8th Dimension. They have 10 films and 7 TV productions to their name, working mainly across genres like drama, romance, sci-fi.
90R.I.P.
10Movies
7Series
Mariclare Costello
10 Movies
7 Series
Originally from Peoria, Illinois, USA, Mariclare Costello works as an actress. Their performance in Indecent Proposal as David's Mother remains one of the most memorable of their filmography. Other notable titles in their filmography include Ordinary People and The Adventures of Buckaroo Banzai Across the 8th Dimension. They have 10 films and 7 TV productions to their name, working mainly across genres like drama, romance, sci-fi.
90 R.I.P.
R.I.P.
10
Movies
7
Series
Latest Trailers
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Indecent Proposal
Full Filmography
Indecent Proposal
David's Mother
1993
Film
American Harvest
Mary Alice Duncan
1987
Film
Murder, She Wrote
Cassie Latham Burns
1986
TV
The Adventures of Buckaroo Banzai Across the 8th Dimension
Senator Cunningham
1984
Film
Nightmares
Adele Cooney (segment "The Bishop of Battle")
1983
Film
Skeezer
Barbara Thompson
1982
Film
Ordinary People
Audrey
1980
Film
Hart to Hart
Anita Boyer
1982
TV
The Incredible Hulk
Kay Wallace
1978–1979
TV
Photos
Frequently Asked Questions
Is Mariclare Costello still alive?
Mariclare Costello passed away on April 17, 2026 at age 90.
What are the most famous roles of Mariclare Costello?
Mariclare Costello is best known for roles in Indecent Proposal, Ordinary People, The Adventures of Buckaroo Banzai Across the 8th Dimension.
How many movies has Mariclare Costello been in?
Over a 56-year career (since 1970), Mariclare Costello has appeared in 24 movies and 8 TV shows.
What was Mariclare Costello's first movie?
The career of Mariclare Costello began with Pound (1970).
What is Mariclare Costello's most recent movie or series?
Mariclare Costello's most recent release is Shadow of the Blair Witch, which premiered on October 22, 2000.
What TV shows has Mariclare Costello appeared in?
On television, Mariclare Costello has appeared in The Incredible Hulk, Murder, She Wrote, Kojak, Hart to Hart.
Mariclare Costello
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.