The Duke d'Enghien, Louis Antoine, Henri de Bourbon, son of the Duke of Bourbon, and a descendant of the great Condé who had done so much for France in her wars, was living at Ettenheim, under the protection of the Margrave of Baden, to be near the lady whom he loved, the Princess Charlotte de Rohan, and "to be ready," says Walter Scott, "to put himself at the head of the royalists in the east of France," if opportunity offered. It was reported to Napoleon that the duke came over into France probably on political errands, and that he was corresponding with disaffected persons in France. Napoleon sent some officers to seize the duke on the night of March 15, 1804; he was carried to Strasburg, and thence to the Castle of Vincennes, near Paris, arriving on the afternoon of Tuesday, March 20. He was aroused from sleep a little before six on the morning of the 21st, and innocently asked if he were to be imprisoned. He was conducted outside the castle; by the light of a lantern his sentence was read to him. He denied any complicity in the conspiracy against the life of the First Consul, which was doubtless true; requested to see Napoleon, which was refused; asked an officer to take a ring, a lock of hair, and a letter to his beloved, and was shot at six in the morning, by his open grave, his devoted dog by his side. Bourrienne says, "This faithful animal returned incessantly to the fatal spot.... The fidelity of the poor dog excited so much interest that the police prevented any one from visiting the fatal spot, and the dog was no longer heard to howl over his master's grave." Josephine had heard of Napoleon's intention to send terror among the Bourbon conspirators, and had begged him, on her knees and with tears, to save the life of the young prince. It would have been well for him had he listened to her entreaties. France, and Europe as well, were shocked at this death. The Russian court went into mourning for the Bourbon prince. No doubt Napoleon was incensed by the Bourbon plots, and after this death these ceased; but Las Cases, at St. Helena, said Napoleon always regretted it, saying, "Undoubtedly, if I had been informed in time of certain circumstances respecting the opinions of the prince, and his disposition, if, above all, I had seen the letter which he wrote to me, and which, God knows for what reason, was only delivered to me after his death, I should certainly have forgiven him."