Stevens, the prototype of "The Duchess" is Georgiana.
Georgina Introduction:
Georgiana Cavendish, Duchess of Devonshire, was the first wife of William Cavendish, the fifth Duke of Devonshire. , had a son, William George Spencer Cavendish, the 6th Duke of Devonshire. Georgiana's immediate relatives also include the famous British aristocratic novelist Miss Caroline Lamb, who is her niece.
Georgiana's achievements:
Georgina was an avid writer and produced many essays and poems, some of which have been published. Georgiana wrote poems for her father when she was a little girl, and manuscripts of some of these poems were later circulated and read by Horace Walpole, 4th Earl of Orford, and the Reverend William Mason.