'The Waltons' Actress Mariclare Costello Dead at 90

Mariclare Costello, best known for playing schoolteacher Rosemary Hunter on "The Waltons," has died at 90. Her family says she passed away April 17 in Brooklyn, closing out a long and impressive career that also includes the 1971 cult horror flick…

Apr 28, 2026 - 01:30
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'The Waltons' Actress Mariclare Costello Dead at 90
Mariclare Costello, best known for playing schoolteacher Rosemary Hunter on "The Waltons," has died at 90. Her family says she passed away April 17 in Brooklyn, closing out a long and impressive career that also includes the 1971 cult horror flick…

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