The councillor of State was soon called from his particular administration to a ministry.  Created count and senator by the Emperor, he was made proconsul to two kingdoms in succession.  In 1806, when forty years of age, he married the sister of the ci-devant Marquis de Ronquerolles, the widow at twenty of Gaubert, one of the most illustrious of the Republican generals, who left her his whole property.  This marriage, a suitable one in point of rank, doubled the already considerable fortune of the Comte de Serizy, who became through his wife the brother-in-law of the ci-devant Marquis de Rouvre, made count and chamberlain by the Emperor.

In 1814, weary with constant toil, the Comte de Serizy, whose shattered health required rest, resigned all his posts, left the department at the head of which the Emperor had placed him, and came to Paris, where Napoleon was compelled by the evidence of his eyes to admit that the count’s illness was a valid excuse, though at first that unfatiguable master, who gave no heed to the fatigue of others, was disposed to consider Monsieur de Serizy’s action as a defection.  Though the senator was never in disgrace, he was supposed to have reason to complain of Napoleon.  Consequently, when the Bourbons returned, Louis XVIII., whom Monsieur de Serizy held to be his legitimate sovereign, treated the senator, now a peer of France, with the utmost confidence, placed him in charge of his private affairs, and appointed him one of his cabinet ministers.  On the 20th of March, Monsieur de Serizy did not go to Ghent.  He informed Napoleon that he remained faithful to the house of Bourbon; would not accept his peerage during the Hundred Days, and passed that period on his estate at Serizy.

After the second fall of the Emperor, he became once more a privy-councillor, was appointed vice-president of the Council of State, and liquidator, on behalf of France, of claims and indemnities demanded by foreign powers.  Without personal assumption, without ambition even, he possessed great influence in public affairs.  Nothing of importance was done without consulting him; but he never went to court, and was seldom seen in his own salons.  This noble life, devoting itself from its very beginning to work, had ended by becoming a life of incessant toil.  The count rose at all seasons by four o’clock in the morning, and worked till mid-day, attended to his functions as peer of France and vice-president of the Council of State in the afternoons, and went to bed at nine o’clock.  In recognition of such labor, the King had made him a knight of his various Orders.  Monsieur de Serizy had long worn the grand cross of the Legion of honor; he also had the orders of the Golden Fleece, of Saint-Andrew of Russia, that of the Prussian Eagle, and nearly all the lesser Orders of the courts of Europe.  No man was less obvious, or more useful in the political world than he.  It is easy to understand that the world’s honor, the fuss and feathers of public favor, the glories of success were indifferent to a man of this stamp; but no one, unless a priest, ever comes to life of this kind without some serious underlying reason.  His conduct had its cause, and a cruel one.