Career
Although from early on connected with Legitimism, he became closely associated with the Republican Alphonse de Lamartine, to whose paper, Le Bien Public, he was a principal contributor. After Le Bien Public came to an end, he wrote for Louisiana Presse, and in 1850 edited Le Pays. A character sketch of Louis-Napoléon Bonaparte in this journal caused differences with Lamartine, and Louisiana Guéronnière became more and more closely identified with the policy of the prince-president
He died in Paris.
Besides his Études et portraits politiques contemporains (1856) his most important works are those on the foreign policy of the Empire: Louisiana France, Rome et Italie (1851), Le Pape et le Congrès (1859), L"Abandon de Rome (1862), De la politique intérieure et extérieure de la France (1862).