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Mariclare Costello

Mariclare Costello

Acting • 1936-02-06 • Peoria, Illinois, USA

Mariclare Catherine Costello (February 3, 1936 – April 17, 2026) was an American actress. She was a lifetime member of The Actors Studio. Costello's most notable role was that of Rosemary Hunter Fordwick on the television series The Waltons, from 1972 to 1977. In 1977, after her role on The Waltons, she played matriarch Maggie Fitzpatrick on the short-lived drama show The Fitzpatricks.

Known For

The Waltons7.1

The Waltons

1972

Let's Scare Jessica to Death6.2

Let's Scare Jessica to Death

1971

The Execution of Private Slovik7.4

The Execution of Private Slovik

1974

Shadow of the Blair Witch5.5

Shadow of the Blair Witch

2000

Ordinary People7.5

Ordinary People

1980

Coward of the County6.5

Coward of the County

1981

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Filmography