Louis XVIII's first ministers, who included Charles Maurice de Talleyrand-Périgord, Armand-Emmanuel de Vignerot du Plessis, duc de Richelieu and Élie, duc Decazes, were replaced by the "Chambre introuvable" dominated by the Ultras. Louis XVIII finally decided to dissolve this chaotic assembly, but the new liberals who replaced them were no easier to govern. After the 1820 assassination of Charles Ferdinand, Duke of Berry, the ultra-reactionary son of the comte d'Artois (Louis XVIII's brother and future Charles X) and a short interval during which the Richelieu governed, the Ultras were back in government headed by the Jean-Baptiste de Villèle.