Mariclare Costello
Acting · Born 1936-02-06 · age 90 at death · 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.
Titles
Indecent Proposal
Ordinary People
The Incredible Hulk
The Adventures of Buckaroo Banzai Across the 8th Dimension
Murder, She Wrote
Let's Scare Jessica to Death
Kojak
Hart to Hart
The Waltons
Nightmares
Chicago Hope
Raid on Entebbe
Lou Grant
Shadow of the Blair Witch
The Execution of Private Slovik
Coward of the County
Victims for Victims: The Theresa Saldana Story
Pound
Heart of a Champion: The Ray Mancini Story
The Gun
She Said No
Conspiracy of Terror
The Boy Who Drank Too Much
The Fitzpatricks
All God's Children
A Sensitive, Passionate Man
Appearances
Skeezer
American Harvest
After the Fall
Territorial Men