Arabella Diana Cope was a British noblewoman. She was Duchess of Dorset by her first marriage to John Sackville, 3rd Duke of Dorset, and subsequently Countess of Whitworth by her second marriage to Charles Whitworth, 1st Earl Whitworth.
- Occupation
- aristocrat
- Citizenship
- United Kingdom
- Born
- 1769
- Died
- August 1, 1829, August 1, 1825