Mariclare Costello
Acting · Born Feb 6, 1936 · Died Apr 17, 2026 (90) · 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.
Known for
Indecent Proposal
19936.4
Ordinary People
19807.4
The Adventures of Buckaroo Banzai Across the 8th Dimension
19846.0
The Incredible Hulk
19777.2
Murder, She Wrote
19847.5
Let's Scare Jessica to Death
19716.2
Kojak
19737.3
Hart to Hart
19796.9
The Waltons
19727.1
Nightmares
19835.9
Chicago Hope
19947.2
Raid on Entebbe
19766.0
