But the most important proselyte to the royal cause was the Maréchal Marmont, Duke of Ragusa, who, lying at Essonne with ten or twelve thousand men, formed the advance of the French army. Conceiving himself to have the liberty of other Frenchmen to attend at this crisis to the weal of France, rather than to the interest of Napoleon alone, and with the purpose of saving France from the joint evils of a civil and domestic war, he made use of the position in which he was placed, to give a weight to his opinion, which that of no other individual could have possessed at the moment. Maréchal Marmont, after negotiation with the Provisional Government on the one hand, and Prince Schwartzenberg on the other, had entered into a convention on his own account, and that of his corps d'armée, by which he agreed to march the division which he commanded within the lines of cantonment held by the allies, and thus renounced all idea of further prosecuting the war. On the other hand, the maréchal stipulated for the freedom and honourable usage of Napoleon's person, should he fall into the hands of the allies. He obtained also a guarantee, that his corps d'armée should be permitted to retreat into Normandy. This convention was signed at Chevilly, upon 3d April.[42] This step has been considered as a defection on the part of Marmont;[43] but why is the choice of a side, betwixt the Provisional Government and the Emperor, more a desertion in that general than in any other of the maréchals or authorities who presently after took the very same step? And if the Duke of Ragusa by that means put further bloodshed out of question, ought it not to be matter of rejoicing (to borrow an expression of Talleyrand's on a similar occasion) that the maréchal's watch went a few minutes faster than those of his colleagues? When Macdonald and Ney communicated to Marmont that they were bearers of Napoleon's abdication, and that he was joined with them in commission, that maréchal asked why he had not been summoned to attend with the others at Fontainbleau, and mentioned the convention which he had entered into, as acting for himself.[44] The Duke of Tarentum expostulated with him on the disadvantage which must arise from any disunion on the part of the principal officers of the army. Respecting the council at Fontainbleau, he stated it had been convened under circumstances of such sudden emergency, that there was no time to summon any other than those maréchals who were close at hand, lest Napoleon had in the meanwhile moved forward the army. The commissioners entreated Marmont to suspend the execution of the separate convention, and to come with them, to assist at the conferences to be held at Paris. He consented, and mounted into Maréchal Ney's carriage, leaving General Souham, who, with all the other generals of his division, two excepted, were privy to the convention, in command of his corps d'armée, which he gave orders should remain stationary.