Beverley Owen, the actress best known for originating the character Marilyn on the sitcom "The Munsters," has died at age 81.

Her co-star Butch Patrick, who played Eddie Munster on the beloved 1960s comedy, confirmed Owen's death to USA TODAY Monday, saying "she is gone." A day earlier, he took to Facebook to pay tribute to the late actress.

"Beautiful Beverly (sic) Owen has left us. What a sweet soul," he wrote Sunday. "I had the biggest crush on her. RIP Bev and thanks for your 13 memorable Marilyn Munster episodes."

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Owen's daughter, Polly Stone, told TMZ that her mother died of ovarian cancer at her Vermont home on Feb. 21 while surrounded by friends and family. The actress was reportedly diagnosed in January 2017, but did not disclose her illness to the public.

The Iowa native appeared on 13 episodes of "The Munsters," which centered on a sweet family of lovable monsters, including versions of Frankenstein's monster, Dracula and the Wolfman — or, in that case, Wolfboy.

Owen left the show to marry writer and producer Jon Stone. (They were married from 1966 to 1974.) She was replaced by actress Pat Priest.

The late actress is survived by daughters, Polly and Kate.