Mariclare Costello Dies: ‘The Waltons’ Actor Was 90

Mariclare Costello, who played the devoted schoolteacher Rosemary Hunter on The Waltons, a free-spirited ...

Mariclare Costello, Actress in ‘The Waltons’ and ‘Let’s Scare Jessica to Death,’ Dies at 90

A lifetime member of The Actors Studio and an original player with the Lincoln Center Repertory, she also appeared on Broadway with Stacy Keach, Jimmy Stewart and Helen Hayes.

Mariclare Costello, Teacher Rosemary On ‘The Waltons’, Dies At 90

Mariclare Costello, a prolific actress whose credits include “The Waltons” and “Let’s Scare Jessica to Death,” has died.
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“The Waltons” Actress Mariclare Costello Dies at 90: 'Her Gift Was Rare,' Says Family

Mariclare Costello, the actress best known for her role as teacher Rosemary Hunter on The Waltonsand for her work in the cult horror film Let’s Scare Jessica to Death, has died at age 90. “Her gift ...