After leaving the army, he was called to the Chamber of Peers on 19 April 1845, where he voted with the supporters of Louis-Philippe's government.

He was made a knight of the Spanish Order of the Golden Fleece in 1838, and an officer of the Legion of Honour on 30 June 1867, as a member of the jury of the Exposition Universelle.

[6] On 26 February 1829 Talleyrand married Anne Louise Charlotte de Montmorency (c. 1810–1858) in Paris.

[citation needed] Through his eldest son Boson, he was a grandfather of Marie Pierre Camille Louis Hélie de Talleyrand-Périgord, 4th Duke of Talleyrand (1859-1937), who married American heiress Anna Gould (the former wife of his cousin Boni de Castellane); and Paul Louis Marie Archambault Boson de Talleyrand-Périgord, styled Duke de Valençay, 5th Duke of Talleyrand (1867-1952), who married Helen Stuyvesant Morton,[9] daughter of former U.S. Vice President Levi P.

[10][11][12] Through his youngest son Nicolas Raoul Adalbert, he was a grandfather of Napoléon Louis Eugène Alexandre Anne Emmanuel de Talleyrand-Périgord, 8th Duke of Montmorency (1867–1951), who married three times but died without issue, at which time the dukedom of Montmorency became extinct.