Personal Info
Mariclare Catherine Costello
Mariclare Costello
Acting
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.
Known For
Filmography
Movies
Shadow of the Blair Witch
as Kathy Patterson
Indecent Proposal
as David's Mother
Appearances
as Rose
She Said No
as Susan Finn
American Harvest
as Mary Alice Duncan
Heart of a Champion: The Ray Mancini Story
as Ellen Mancini
The Adventures of Buckaroo Banzai Across the 8th Dimension
as Senator Cunningham
Victims for Victims: The Theresa Saldana Story
as Jane Bladow
Nightmares
as Adele Cooney (segment "The Bishop of Battle")
Skeezer
as Barbara Thompson
TV Shows
Chicago Hope
as Mother Mary Catherine · 1 ep.
Murder, She Wrote
as Cassie Latham Burns · 1 ep.
Hart to Hart
as Anita Boyer · 1 ep.
The Incredible Hulk
as Kay Wallace · 1 ep.
Lou Grant
as Louise Larsen · 1 ep.
The Fitzpatricks
as Maggie Fitzpatrick · 13 ep.
Kojak
as Diane Gordon · 1 ep.
The Waltons
as Mrs. Rosemary Fordwick (archive footage) · 1 ep.
