Lady Mary Saville (1700-1751) (1700–1751) Parents William Savile, 2nd Marquess of Halifax Lady Mary Finch Children John Tufton, Lord Tufton Lady Mary Duncan Sackville Tufton, 8th Earl of Thanet Lady Charlotte Tufton Siblings Lady Anne Saville Dorothy Boyle, Countess of Burlington and Countess of Cork Robert Ker, 2nd Duke of Roxburghe Partners Sackville Tufton, 7th Earl of Thanet