At this time the inhabitants of Martinique were in a very discontented and unhappy position. Their coast was closely blockaded by the English fleet, provisions were extremely scarce, and the necessities of the populace were utilised by unscrupulous officials who amassed riches by victimising those who had been placed under their authority. The Marquis de Caylus, governor of the Windward Islands, was one of the most rapacious of these harpies; and although, perhaps, he was more a tool in the hands of others than an independent actor, the feeling of the people was strong against him, and it was hoped that the newly-arrived prince would supersede him, and redress the grievances which his maladministration had created. Accordingly Nadau, who entertained a private spite against De Caylus, lost no time in representing the infamy of the marquis, and was comforted by the assurance of his youthful guest, that he would visit those who had abused the confidence of the king with the severest punishment, and not only so, but would place himself at the head of the islands to resist any attempt at invasion by the English.
These loyal and generous intentions, which Nadau did not fail to make public, increased the general enthusiasm, and rumours of the plot which was hatching reached Fort St. Pierre, where the Marquis de Caylus had his head-quarters. He at once sent a mandate to Nadau, ordering the stranger before him. A message of similar purport was also sent to the youth himself, addressed to the Count de Tarnaud. Upon receiving it he turned to the officers who had brought it, saying--"Tell your master that to the rest of the world I am the Count de Tarnaud, but that to him I am Hercules Renaud d'Est. If he wishes to see me let him come half-way. Let him repair to Fort Royal in four or five days. I will be there."
This bold reply seems to have completely disconcerted De Caylus. He had already heard of the stranger's striking resemblance to the Duchess de Penthièvre, and the assumption of this haughty tone to an officer of his own rank staggered him. He set out for Fort Royal, but changed his mind on the way, and returned to St. Pierre. The prince, on the other hand, kept his appointment, and not finding the marquis, proceeded to Fort St. Pierre, which he entered in triumph, attended by seventeen or eighteen gentlemen. The governor caught a glimpse of him as he passed through the streets, and exclaimed "that he was the very image of his mother and sister," and in a panic quitted the town. Nothing could have been more fortunate than his flight. The prince assumed all the airs of royalty, and proceeded to establish a petty court, appointing state officers to wait upon him. The Marquis d'Eragny he created his grand equerry; Duval Ferrol and Laurent 'Dufont were his gentlemen-in-waiting; and the faithful Rhodez was constituted his page. Regular audiences were granted to those who came to pay their respects to him, or to present memorials or petitions, and for a time Martinique rejoiced in the new glory which this illustrious presence shed upon it.