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The Marchioness of Cholmondeley | |
|---|---|
 Sybil Sassoon, Countess of Rocksavage, by William Orpen, 1916 | |
| Born | Sybil Rachel Betty Cecile Sassoon 30 January 1894 London, England |
| Died | December 26, 1989 (aged 95) King's Lynn, Norfolk, England |
| Noble family | Sassoon family |
| Spouse(s) | George Cholmondeley, 5th Marquess of Cholmondeley |
| Issue | Lady Aline Caroline Cholmondeley Hugh Cholmondeley, 6th Marquess of Cholmondeley Lord John George Cholmondeley |
| Father | Edward Sassoon |
| Mother | Aline Caroline de Rothschild |
Sybil Rachel Betty Cecile Cholmondeley, Marchioness of Cholmondeley CBE (/ˈtʃʌmli/ CHUM-lee, born Sybil Rachel Betty Cecile Sassoon; 30 January 1894 – 26 December 1989), styled Countess of Rocksavage from 1913 to 1923, was a British socialite, patron of the arts, and Chief Staff Officer in the Women's Royal Naval Service (WRNS) during the Second World War. She belonged to the prominent Sassoon and Rothschild families.