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Actress Mariclare Costello Dies at 90, Broadway Star

4/28/2026

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Summary

Story summary

Mariclare Costello died on Friday, April 17, 2026, at age 90 in Brooklyn.
She debuted on Broadway in 1964’s *After the Fall* and later appeared on TV series *The Waltons* and *The Fitzpatricks*.
She was married to Allan Arbus until his 2013 death, is survived by daughter Arin Arbus and stepdaughters Amy and Doon, and will be buried in Peoria, Illinois after a New York City funeral.

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Story summary

Mariclare Costello died on Friday, April 17, 2026, at age 90 in Brooklyn.
She debuted on Broadway in 1964’s *After the Fall* and later appeared on TV series *The Waltons* and *The Fitzpatricks*.
She was married to Allan Arbus until his 2013 death, is survived by daughter Arin Arbus and stepdaughters Amy and Doon, and will be buried in Peoria, Illinois after a New York City funeral.