Mariclare Costello
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.
Filmography (32)
Shadow of the Blair Witch
Chicago Hope
Indecent Proposal
Appearances
She Said No
American Harvest
Heart of a Champion: The Ray Mancini Story
Victims for Victims: The Theresa Saldana Story
Murder, She Wrote
The Adventures of Buckaroo Banzai Across the 8th Dimension
Nightmares
Skeezer
Coward of the County
Ordinary People
All God's Children
The Boy Who Drank Too Much
Hart to Hart
The Fitzpatricks
Lou Grant
The Incredible Hulk
A Sensitive, Passionate Man
Raid on Entebbe
Territorial Men
Conspiracy of Terror
The Gun
After the Fall
The Execution of Private Slovik
Kojak
The Waltons
Going Where I've Never Been: The Photography of Diane Arbus
Let's Scare Jessica to Death
Pound