Catherine Lucy Wilhelmina Powlett, Duchess of Cleveland, also known as Lady Dalmeny and Lady Harry Vane, was an English courtier, historian and genealogist, best known for her 1889 work The Battle Abbey Roll with some Account of the Norman Lineages.
- Occupation
- genealogist, historian, aristocrat
- Citizenship
- United Kingdom of Great Britain and Ireland
- Born
- June 1, 1819
- Died
- May 18, 1901