The four days during which Savary was absent, while the royal party remained at Vittoria, were a period of harassing doubt to Ferdinand. He was visited by all manner of persons who besought him not to go on, and especially by Spaniards lately arrived from Paris, who detailed all the disquieting rumours which they had heard at the French court. Some besought him to disguise himself and escape by night from the 4,000 troops of the Imperial Guard who garrisoned Vittoria. Others pointed out that the Spanish troops in Bilbao, which was still unoccupied by the French, might be brought down by cross-roads, and assume charge of the king’s person halfway between Vittoria and the frontier, in spite of the 600 French cavalry which escorted the cavalcade. Guarded by his own men Ferdinand might retire into the hills of Biscay. But to adopt either of the courses proposed to him would have compelled the King to come to an open breach with Bonaparte, and for this he had not sufficient courage, as long as there was the slightest chance of getting safely through his troubles by mere servility.
On April 18 Savary reappeared with the expected communication from Bayonne. It was certainly one of the strangest epistles that one sovereign ever wrote to another, and one of the most characteristic products of Napoleon’s pen. It was addressed to the Prince of the Asturias, not to the King of Spain, which was an ominous preface. But on the other hand the Emperor distinctly stated that ‘he wished to conciliate his friend in every way, and to find occasion to give him proofs of his affection and perfect esteem.’ He added that ‘the marriage of your royal highness to a French princess seems conformable to the interests of my people, and likely to forge new links of union between myself and the house of Bourbon.’ The core of the whole was the explicit statement that ‘if the abdication of King Charles was spontaneous, and not forced on him by the riot at Aranjuez, I shall have no difficulty in recognizing your royal highness as King of Spain. On these details I wish to converse with your royal highness.’ This was a double-edged saying: Napoleon had in his pocket Charles’s protest, complaining that the abdication had been forced upon him by fears for his personal safety: but Ferdinand was not aware of the fact; indeed he so little realized his parent’s state of mind that he had written to him before quitting Madrid in the most friendly terms. If he had fathomed the meaning of Napoleon’s carefully constructed sentence, he would have fled for his life to the mountains.