[2] She then returned to Paris with her children – three older daughters and one son[citation needed]– and lived there quietly until 1796, when she married the Marc-René-Voyer de Paulmy, marquis d'Argenson, grandson of Louis XV's minister of war.

[2] His first-born daughter Louise would publish novels and biographies, and be famously painted by Ingres; another son, Auguste, would have an ecclesiastical and academic career.

By the influence of his uncle, Amédée de Broglie, his right to a peerage had been recognized, and to his own great surprise he received, in June 1814, a summons from Louis XVIII to the Chamber of Peers.

He returned to Paris at the end of the year, but took no part in politics until the elections of September 1816 broke the power of the ultraroyalists and substituted for the Chambre introuvable a moderate assembly composed of liberal Doctrinaires.

De Broglie's political attitude during the years that followed is best summed up in his own words:[2] From 1812 to 1822 all the efforts of men of sense and character were directed to reconciling the Restoration and the Revolution, the old régime and the new France.

The Belgian crisis had been settled, so far as the two powers were concerned, before De Broglie took office, but the concerted military and naval action for the coercion of the Dutch, which led to the French occupation of Antwerp, was carried out under his auspices.

The good understanding of which this was the symbol characterized also the relations of De Broglie and Palmerston during the crisis of the first war of Muhammad Ali with the Porte, and in the affairs of the Spanish peninsula their common sympathy with constitutional liberty led to an agreement for common action, which took shape in the Quadruple Alliance between Britain, France, Spain and Portugal, signed at London on 22 April 1834.

From 1836 to 1848, De Broglie held almost completely aloof from politics, to which his scholarly temperament little inclined him, a disinclination strengthened by the death of his wife on 22 September 1838.

[2] The revolution of 1848 was a great blow to him, for he realized that it meant the final ruin of the constitutional monarchy, in his view the political system best suited to France.

He took his seat, however, in the republican National Assembly and in the Convention of 1848, and, as a member of the section known as the "Burgraves", fought against both socialism and what he foresaw as a coming autocratic reaction.