Marie Dorothée Louise de Talleyrand-Périgord (17 November 1862 – 17 July 1948) was a French aristocrat most notable for her salons and her role in European high-society in the late 19th and early 20th centuries. Known as "Dolly" to her friends, she inspired artists and writers including Marcel Proust. She was the half-sister of the prince de Sagan, who had dual French and Prussian nationality and sat in the Prussian House of Lords.