Mariclare Costello
Known for: Actress
Born: 6 February 1936, Peoria, Illinois, USA
Died: 17 April 2026
Credits: 31 titles
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
Shadow of the Blair Witch
Chicago Hope
Indecent Proposal
She Said No
Appearances
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 Incredible Hulk
Lou Grant
The Fitzpatricks
A Sensitive, Passionate Man
Raid on Entebbe
Territorial Men
Conspiracy of Terror
After the Fall
The Gun
The Execution of Private Slovik
Kojak
The Waltons
Let's Scare Jessica to Death
Pound