Mary Stanley, Countess of Derby, Date of Birth, Date of Death
TweetMary Stanley, Countess of Derby
English political hostess
Date of Birth: 
About Mary Stanley, Countess of Derby
- Mary Stanley, Countess of Derby (previously known as Mary Gascoyne-Cecil, Marchioness of Salisbury, née Lady Mary Sackville-West; 23 July 1824 – 6 December 1900) was an English grande dame and political hostess.
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