Mariclare Costello
Explore the best Mariclare Costello movies ranked by Movie Rankings users. Browse biography, ranked filmography, and movie detail links for 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.
What is the best Mariclare Costello movie?
Movie Rankings is still collecting enough aggregate data to name a definitive top Mariclare Costello movie.
How many Mariclare Costello movies are ranked here?
This page tracks every ranked credit we currently have for Mariclare Costello, and expands as more titles and comparisons are added.
How often do Mariclare Costello rankings update?
These rankings refresh whenever Movie Rankings recomputes global results. This page was last generated from site data on May 13, 2026.
Sources & freshness
Last refreshed from site data on May 13, 2026.
