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Lady Cynthia Mosley

Oswald and Cynthia Mosley on their wedding day, May 11, 1920
Born August 23, 1898(1898-08-23)
Kedleston, Derbyshire, England
Died May 16, 1933 (aged 34)
London, England
Cause of death Peritonitis
Nationality English
Ethnicity White
Occupation Politician
Known for Oswald Mosley's first wife
Spouse(s) Oswald Mosley
Children Vivien (b. 1921)
Nicholas Mosley (b. 1923)
Michael (b. 1932)
Parents George Curzon, 1st Marquess Curzon of Kedleston
Mary Curzon, Baroness Curzon of Kedleston
Relatives Mitford family

Lady Cynthia Blanche ("Cimmie") Mosley[1] (23 August 1898 – 16 May 1933) was a British politician of Anglo-American parentage and the first wife of Conservative MP, Labour MP and British fascist Sir Oswald Mosley, Bt.

Born Cynthia Blanche Curzon at Kedleston Hall, she was the second daughter of Hon. George Curzon (created Marquess Curzon of Kedleston in 1921) and his first wife, Mary Victoria Leiter, an American department-store heiress. As the daughter of a Marquess, she was styled Lady Cynthia.

On 11 May 1920, Cynthia married the then-Conservative politician, Oswald Mosley. He was her first and only lover. After both joined the Labour Party in 1924, she was elected Labour Member of Parliament (MP) for Stoke-on-Trent in 1929 and her husband was elected for Smethwick at the same time. After finding the Labour Party unsuitable, Oswald formed the New Party on 1 March 1931 and Lady Cynthia also joined. The party soon adopted fascist policies and became unpopular by the time of the sudden general election later that year. All the party's candidates in the election (including Lady Cynthia) lost their seats, mostly to Conservative politicians.

After their defeat, Lady Cynthia continued to support her husband in his fascist studies until her death in 1933 at age 34 after an operation for peritonitis following acute appendicitis, in London.

During their marriage her younger sister Alexandra was a mistress of Mosley, as was, briefly, their stepmother, Grace Curzon, Marchioness Curzon of Kedleston. In 1932 he began an affair with Diana Mitford, whom he married in 1936. Diana was one of Britain's noted Mitford sisters, known for her friendship with Adolf Hitler.


  1. ^ Although as the wife of a baronet she was Lady Mosley, she was almost always referred to as Lady Cynthia Mosley, her own title as the daughter of a marquess.


  • de Courcy Anne (2003) "The Viceroy's Daughters, The Lives of the Curzon Sisters", Harper Collins,
    ISBN 0-06-093557-X (biography), retrieved from publisher 3/14/2007 publisher's partial Abstract.
  • Mosley, Review
Parliament of the United Kingdom
Preceded by
John Ward
Member of Parliament for Stoke
Succeeded by
Ida Copeland

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