Mary Stanley, Lady Derby

English political hostess (1824–1900)

Parents

• Elizabeth Sackville-West, Countess De La Warr
• George Sackville-West, 5th Earl De La Warr

Children

• Lady Margaret Gascoyne-Cecil
• Lord Sackville Gascoyne-Cecil
• Lord Lionel Gascoyne-Cecil
• Mary Arabella Stewart, Countess of Galloway
• Lord Arthur Gascoyne-Cecil

Siblings

• Reginald Sackville, 7th Earl De La Warr
• Charles Sackville-West, 6th Earl De La Warr
• Lionel Sackville-West, 2nd Baron Sackville
• William Sackville-West
• Elizabeth Russell, Duchess of Bedford
• Lady Arabella Sackville-West
• Mortimer Sackville-West, 1st Baron Sackville
• George West, Viscount Cantelupe

Partners

• Edward Stanley, 15th Earl of Derby
• James Gascoyne-Cecil, 2nd Marquess of Salisbury