Background
Moore was born in New York City to Jewish parents, Oren Moore (January 12, 1883 — March 13, 1967), a cantor at one of the local synagogues, and Gabriella Gefen (October 31, 1885 — November 19, 1954). Some sources indicate she was born Deena Rivka Moore, but she was legally known as Florence Moore by the 1930s.
Career
In the late 1920s, she decided to pursue an acting career on the Broadway stage. She began her career on Broadway in 1927, appearing in such plays as A Lady in Love, The Trial of Mary Dugan, Cross Roads, Torch Song, Twentieth Century, Phantoms, Conflict, Anatol, and Jarnegan. In the 1930s, she decided to embark on a film career and in 1935 she arrived to and made her screen debut in an uncredited role in the Cary Grant-Katharine Hepburn film, Sylvia Scarlett for Radio-Keith-Orpheum Radio Pictures.
She primarily was what is known as a "free-lance actress" and floated between Metro-Goldwyn-Mayer and Warner Brothers
Studios. In the course of her film career, she would star in twenty-two films between 1935 and 1951. Some of her film credits include parts in Boy Meets Girl (1938),,,, and
By the mid-1940s, Moore found herself getting less work in, but more parts on the New York stage. Moving back to New York City she made one final performance onstage in The Diary of Anne Frank in the role of Mistress
Van Daan. In 1957, she retired from acting altogether, aged 54.
After her film career in ended, Moore sold her home and permanently moved back to her native New York City, where she lived the rest of her life. Following her retirement she was active in campaigning civil rights for Jewish communities and women"s rights. Moore died of natural causes on February 22, 1978, aged 75, in her Manhattan apartment.
She left no immediate survivors.
She was cremated and her ashes scattered off her balcony.