Margaret Cavendish Bentinck, Duchess of Portland was the richest woman in Great Britain of her time, styled Lady Margaret Harley before 1734, Duchess of Portland from 1734 to her husband's death in 1761, and Dowager Duchess of Portland from 1761 until her own death in 1785.
- Occupation
- botanist, naturalist, scientific collector, aristocrat
- Citizenship
- Kingdom of Great Britain
- Born
- February 11, 1715, 1715
- Died
- July 17, 1785, 1785
