Home / Arts and Entertainment / Waltons Star Mariclare Costello Passes Away at 90
Waltons Star Mariclare Costello Passes Away at 90
27 Apr
Summary
- Actress Mariclare Costello, known for The Waltons, died at 90.
- She starred in cult horror film Let's Scare Jessica to Death.
- Costello was also an influential drama teacher and director.
Mariclare Costello, an actress celebrated for her role on "The Waltons" and in the cult film "Let's Scare Jessica to Death," died on April 17, 2026, in Brooklyn, N.Y., at age 90. Her family memorialized her as a person of rare gifts, who inspired creativity and paid close attention to the world around her.
Costello brought the character of Rosemary Hunter to life in the early seasons of "The Waltons." She shared fond memories of laughter and camaraderie with co-stars Richard Thomas and John Ritter during her time on the beloved series.
