While England fumed, and King James had begun to fret in chorus with the country, his "sweet boys and dear venturous knights, worthy to be put in a new romanso," as he had remarked on first learning of their flight, were making their way at utmost horse-speed across France. A few miles beyond Bayonne they met a messenger from the Earl of Bristol, ambassador at Madrid, bearing despatches to England. They stopped him, opened his papers, and sought to read them, but found the bulk of them written in a cipher beyond their powers to solve. Baffled in this, they bade Gresley, the messenger, to return with them as far as Irun, as they wished him to bear to the king a letter written on Spanish soil. No great distance farther brought them to the small river Bidassoa, the Rubicon of their journey. It formed the boundary between France and Spain. On reaching its southern bank they stood on the soil of the land of the dons, and the truant prince danced for joy, filled with delight at the success of his runaway prank. Gresley afterwards reported in England that Buckingham looked worn from his long ride, but that he had never seen Prince Charles so merry. Onward through this new kingdom went the youthful scapegraces, over the hills and plains of Spain, their hearts beating with merry music,--Buckingham gay from his native spirit of adventure, Charles eager to see in knight-errant fashion the charming infanta of Spain, of whom he had seen, as yet, only the "counterfeit presentment," and a view of whom in person was the real object of his journey. So ardent were the two young men that they far outrode their companions, and at eight o'clock in the evening of March 7, seventeen days after they had left Buckingham's villa at Newhall, the truant pair were knocking briskly at the door of the Earl of Bristol at Madrid. Wilder and more perilous escapade had rarely been adventured. The king had let them go with fear and trembling. Weak-willed monarch as he was, he could not resist Buckingham's persuasions, though he dreaded the result. The uncertain temper of Philip of Spain was well-known, the preliminaries of the marriage which had been designed between Charles and the infanta were far from settled, the political relations between England and Spain were not of the most pacific, and it was within the bounds of probability that Philip might seize and hold the heir of England. It would give him a vast advantage over the sister realm, and profit had been known to outweigh honor in the minds of potentates.