Umberto II of Italy
In 1898, upon the death of his father, he succeeded to his father's titles, becoming His Serene Highness, the 4th Duke of Talleyrand and Herzog zu Sagan. On 10 July 1912, he was confirmed as the 5th Duke of Dino by King Umberto II of Italy. After his death, his titles passed to his son, Hélie de Talleyrand-Périgord, Duke of Sagan.