| Florence E. Allen | 
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| In office October 5, 1959 – September 12, 1966
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| In office September 18, 1958 – October 5, 1959
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| Preceded by | Charles Casper Simons | 
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| Succeeded by | John Donelson Martin Sr. | 
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| In office March 21, 1934 – October 5, 1959
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| Appointed by | Franklin D. Roosevelt | 
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| Preceded by | Smith Hickenlooper | 
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| Succeeded by | Paul Charles Weick | 
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| In office January 1, 1923 – March 21, 1934
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| Preceded by | Benson W. Hough | 
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| Succeeded by | Robert Nugen Wilkin | 
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| Born | Florence Ellinwood Allen (1884-03-23)March 23, 1884
 Salt Lake City, Utah, U.S.
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| Died | September 12, 1966(1966-09-12) (aged 82) Mentor, Ohio, U.S.
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| Political party | Democratic | 
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| Relatives | Clarence Emir Allen (father); Esther Allen Gaw (sister); Bryant Tuckerman (cousin) | 
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| Education | Case Western Reserve University (BA, MA) University of Chicago
 New York University (LLB)
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Florence Ellinwood Allen (March 23, 1884 – September 12, 1966) was a United States circuit judge of the United States Court of Appeals for the Sixth Circuit. She was the first woman to serve on a state supreme court and one of the first two women to serve as a United States federal judge. In 2005, she was inducted into the National Women's Hall of Fame.