nephew and heir of Karl Theodor von Dalberg, and minister and foreign envoy under Napoleon and Louis XVIII of France. As Baden's envoy in Paris from 1803 he became a close friend of Talleyrand. Entering the French service in 1809, he was made a duke and a privy councillor by Napoleon in 1810. A member of Talleyrand's provisional government (1814), he accompanied Talleyrand to the Congress of Vienna as minister plenipotentiary. After the Second Restoration (1815) he was made a minister and a peer of France by Louis XVIII. In 1816 he was French ambassador in Turin. He died at Herrnsheim, which he had inherited from his uncle Karl Theodor. Herrnsheim then passed to his daughter Marie Louise Pelline de Dalberg (d. 1860).