Mariclare Costello, who played the devoted schoolteacher Rosemary Hunter on The Waltons, a free-spirited hippie-turned-vampire in the 1971 cult horror film Let’s Scare Jessica To Death and appeared in nine Broadway productions during the 1960s, died Friday, April 17, in Brooklyn, her family has announced. She was 90.
Married to M*A*S*H actor Allan Arbus until his death in 2013, Costello received her master’s in theater and education from Catholic University, was an original member of Lincoln Center Repertory Company and a lifetime member of The Actors Studio.
Born February 3, 1936, in Peoria, Illinois, Costello moved to New York City after graduate school and landed roles both Off Broadway and on Broadway. Her Broadway debut came in 1964 with a role in Arthur Miller’s After the Fall opposite Jason Robards. Eight Broadway credits would follow, including But For Whom Charlie (1964), The Changeling (1964), Tartuffe (1965), Danton’s Death (1965), The
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