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Jessica was married to fellow actor Hume Cronyn from 1942 until her death in 1994, and they both appeared in the movie Cocoon.
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Jessica was one of the many actors interviewed in the documentary A Century of Cinema in 1994, which celebrated the 100th anniversary of motion pictures.
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Jessica's West End debut was in 1929 in the play The Rumour.
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In December 1986, Jessica received the Kennedy Center Lifetime Achievement Award.
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Jessica received the United States National Medal of Arts in 1990, from George Bush Sr.
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Helen's last film was Camilla. While shooting it she was suffering badly with the ovarian cancer that would eventually kill her so she asked the screenwriter to script a nude scene for her into the screenplay so she could be "cheeky".
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Jessica won the Sarah Siddons award in 1979 for her work in Chicago theatre.
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Jessica became a naturalized U.S citizen in 1954, because she was born in England.
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Jessica married Jack Hawkins in 1932, but they divorced in 1942.
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In 1990, Jessica was chosen by People magazine to be on their annual list of the "50 Most Beautiful People in the World".
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Jessica is the mother of actress Tanya Cronyn who has appeared in two episodes of Law & Order.