Alexandra Mary Spencer-Churchill, Duchess of Marlborough, styled Marchioness of Blandford between 1920 and 1934, was a British peeress. As the wife of the 10th Duke of Marlborough, she was châtelaine of Blenheim Palace.
- Citizenship
- United Kingdom
- Born
- 1900, February 22, 1900
- Died
- 1961, May 23, 1961