Mary Stanley, Countess of Derby
Mary Catherine Stanley | |
|---|---|
| Countess of Derby | |
| Born | Mary Catherine Sackville-West 23 July 1824 |
| Died | 6 December 1900 (aged 76) |
| Spouse(s) | |
| Issue | 5, including Mary Arabella |
| Father | George Sackville-West, 5th Earl De La Warr |
| Mother | Lady Elizabeth Sackville |
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.