Marie Pierre Louis Hélie de Talleyrand-Périgord (August 23, 1859 – October 25, 1937), 5th Duke of Talleyrand and Dino, Prince, then Duke of Sagan, was a French socialite and son of Boson de Talleyrand-Périgord.

[1][2] Talleyrand was born on August 23, 1859, to Boson de Talleyrand-Périgord, the 4th Duke of Talleyrand (1832-1910) and Jeanne Seillière (1839-1905), the heiress to Baron de Seilliere, army supply contractor who had enriched himself during the Franco-Prussian War.

[7] On 10 July 1912, he was confirmed as the 5th Duke of Dino by Umberto II, the King of Italy.

[8][9] Anna was the daughter of Jay Gould (1836–1892), an American railroad developer who has been referred to as one of the ruthless robber barons of the Gilded Age.

[1] They had the following children:[1] Their son, Howard, took his own life on May 28, 1929, at his parents’ home in Paris when told he could not marry.