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.[1][3] His younger brother was Boson de Talleyrand-Périgord (1867-1952), duc de Valençay.[4]
In 1910, upon the death of his father, he succeeded to his father's titles, becoming His Serene Highness, the 5th Duke of Talleyrand and Herzog zu Sagan.[7] On 10 July 1912, he was confirmed as the 5th Duke of Dino by Umberto II, the King of Italy. After his death, his titles passed to his younger brother, as his only son predeceased him.[1]
Howard de Talleyrand, Prince of Sagan (1909–1929), who took his own life on May 28, 1929.[13]
Hélène Violette de Talleyrand (1915–2003), who married James Robert de Pourtalès on March 29, 1937, in Le Val-Saint-Germain. They divorced in 1969, and on March 20, 1969, she married Gaston Palewski (1901–1984), the Minister of Scientific Research and Atomic and Space Questions from 1962 to 1966. They married in Paris. She had Issue.
Their son, Howard, took his own life on May 28, 1929, at his parents’ home in Paris when told he could not marry. He was taken to a hospital on Rue Puccini, where he died. His parents thought at the age of 19, he was too young to marry. Hélie and Anna said: "... we had no objection to the girl, but only opposed the marriage because of our son's age."[14][13]
He was the grandfather of Hélie de Pourtalès who married, as his second wife, Marie Eugénie de Witt (b. 1939), the eldest daughter of Princess Marie Clotilde Bonaparte.
^ abcdef"Talleyrand Dead. Wed Anna Gould. Duke Was Known as Prince of Sagan at Time of Courtship in First of Century". New York Times. October 27, 1937. Retrieved 2011-11-18. Marie Pierre Camille Louis Helie de Talleyrand-Perigord, Prince of Sagan and fifth Duke of Talleyrand, was a principal in one of the international marriage of the first decade of this century. He married Anna Gould, heir to more than $80,000,000 of the fortune of her father, the late Jay Gould, after she had divorced his cousin, Count Boni de Castellane. ...
^ ab"Died". Time. November 8, 1937. Archived from the original on September 30, 2007. Retrieved 2007-07-21. Marie Pierre Louis Hélie de Talleyrand-Périgord, Prince de Sagan, fifth Duke of Talleyrand, 78, husband of Railway Heiress Anna Gould; of a heart attack; in Paris. The Duke married Heiress Gould in 1908 after she had been divorced from his cousin, Count Boni de Castellane. Her father, Jay Gould, who bequeathed her $80,000,000, opposed their marriage.
^"Died". Time magazine. December 8, 1961. Archived from the original on February 4, 2011. Retrieved 2007-07-21. Anna Gould, Duchess of Talleyrand, 83, daughter of Rail Tycoon Jay Gould and one of the first of the American heiresses whose marriages infused new blood—and new money—into Europe's sagging aristocracy; of a heart attack; in Paris. Wed to Count Boniface de Castellane in 1895, Anna Gould divorced him after an 11-year phantasmagoria of pink marble palaces and $150,000 parties during which the Parisian gay blade skated through more than half of her $13.5 million inheritance. Two years later, she wed the fifth Duke of Talleyrand, a descendant of the wily French diplomatist whose machinations shaped post-Napoleonic Europe, lived with him for 29 years until his death in 1937.
^"Talleyrand Motel". Time. June 3, 1929. Archived from the original on October 27, 2010. Retrieved 2007-07-21. Prince of Sagan, son of the Duchess de Talleyrand, who was Anna, the daughter of the late wealthy Jay Gould, shot himself on purpose in his mother's Paris home. ... The statement said: "The Duke and Duchess de Talleyrand regret keenly to announce the critical illness of their son, Howard. ... He shot himself because we refused him permission to marry until he was 21. ... The shooting took place in our home and our son was taken to a hospital in the Rue Puccini. ... Our son is now in an extremely grave condition. We wish to emphasize that we had no objection to the girl, but only opposed the marriage because of our son's age."