However, de Boigne, who was now in his fifties, did not want to return to his former rank of colonel, under the orders of younger men. Although he refused, the offer was renewed. In 1803, Napoleon offered a new proposition to Benoît de Boigne. He asked him to take command of Russian and French troops who would reach India through Afghanistan and push the East India Company out of the subcontinent. But nothing came of this. Benoît de Boigne bought the Château de Beauregard, La Celle-Saint-Cloud for his wife, and she moved in on November 2, 1804. The property was ceded to Francesco Borghèse, Prince Aldobrandini of the House of Borghese, on November 14, 1812, in exchange for a house in Châtenay (now Châtenay-Malabry). Final return to Savoy Benoît de Boigne returned to Savoy definitively in 1807. There, he had himself called "General de Boigne." He lived alone in the château of Buisson-Rond near Chambéry, which he had bought in 1802 and appointed luxuriously for his young wife. But she continued to live in the Paris region, where she lived in the château of Beauregard and then of Châtenay. In this Parisian life she found the material for her celebrated Mémoires, which were published in 1907. The Comtesse de Boigne rarely came to Buisson-Rond, although she occasionally gave urbane receptions during the summer on her way home from taking the waters at Aix, in the company of her friends Madame Récamier, Madame de Staël, Adrien de Montmorency (Anne Adrien Pierre de Montmorency-Laval), and Benjamin Constant. Having returned from the isle of Réunion, Benoît de Boigne received the title of Field Marshal on October 20, 1814, and the Croix de Saint-Louis (Order of Saint Louis) on December 6. His wife was pleased. On February 27, 1815, Louis XVIII gave him the Legion of Honor for services rendered as President of the Conseil général du département du Mont-Blanc. De Boigne was a fervent royalist, and ardent partisan of the Savoy government. Victor Emmanuel I of Sardinia, king of Sardinia and Savoy, gave him the title of Count in 1816, and Charles Felix of Sardinia conferred upon him the Grand Order of Saints Maurice and Lazarus. In 1814 and 1816 he was named General in France and in Savoy. During the last years of his life, Benoît de Boigne occupied himself in managing his immense fortune. He bought much land in the vicinity