The most important are those on Madame de Montausier (1672), which gained him the membership of the Academy, the duchesse d'Aiguillon (1675), and, above all, Marshal Turenne (1676).
After his release he engaged in commerce at Hamburg with his brother Charles and the duc d'Aiguillon, and did not return to France until the Consulate.
In 1786 he was permitted by Vergennes to return to France as an Austrian counsellor of state, and to sue the duc d'Aiguillon (1730-1798), the former minister of Louis XV., for fees due him for legal services rendered some fifteen years earlier.
She was urgent in obtaining the dismissal of d'Aiguillon, and did all in her power to secure the recall of Choiseul, though without success.
Du Plessis Richelieu, duc d'Aiguillon, had to fight simultaneously the estates and the parliament, and had a formidable adversary in L.
Marion, La Bretagne et le duc d'Aiguillon (Paris, 1898); B.
Pocquet, Le Duc d'Aiguillon et la Chalotais (Paris, 1900-1902); Anatole le Braz, Vieilles Histoires du pays breton (1897), and La Legende de la mort (Paris, 1902); Ernest Lavisse, Histoire de France, vol.
The duc de Choiseul, who refused to acknowledge her, was disgraced in 1771; and the duc d'Aiguillon, who had the reputation of being her lover, took his place, and in concert with her governed the monarch.