In these circumstances of despair they resolved to have recourse to Philip, the ancient enemy of their country. Throwing off all allegiance to John, they agreed to accept Louis, the son of that monarch, as their king. Philip had once more an opportunity of bringing the crown of England into his family, and he readily embraced it. He immediately sent his son into England with seven hundred ships, and slighted the menaces and excommunications of the Pope, to attain the same object for which he had formerly armed to support and execute them. The affairs of the barons assumed quite a new face by this reinforcement, and their rise was as sudden and striking as their fall. The foreign army of King John, without discipline, pay, or order, ruined and wasted in the midst of its successes, was little able to oppose the natural force of the country, called forth and recruited by so considerable a succor. Besides, the French troops who served under John, and made a great part of his army, immediately went over to the enemy, unwilling to serve against their sovereign in a cause which now began to look desperate. The son of the King of France was acknowledged in London, and received the homage of all ranks of men. John, thus deserted, had no other ally than the Pope, who indeed served him to the utmost of his power, but with arms to which the circumstances of the time alone can give any force. He excommunicated Louis and his adherents; he laid England under an interdict; he threatened the King of France himself with the same sentence: but Philip continued firm, and the interdict had little effect in England. Cardinal Langton, by his remarkable address, by his interest in the Sacred College, and his prudent submissions, had been restored to the exercise of his office; but, steady to the cause he had first espoused, he made use of the recovery of his authority to carry on his old designs against the king and the Pope. He celebrated divine service in spite of the interdict, and by his influence and example taught others to despise it. The king, thus deserted, and now only solicitous for his personal safety, rambled, or rather fled, from place to place, at the head of a small party. He was in great danger in passing a marsh in Norfolk, in which he lost the greatest part of his baggage, and his most valuable effects. With difficulty he escaped to the monastery of Swineshead, where, violently agitated by grief and disappointments, his late fatigue and the use of an improper diet threw him into a fever, of which he died in a few days at Newark, not without suspicion of poison, after a reign, or rather a struggle to reign, for eighteen years, the most turbulent and calamitous both to king and people of any that are recorded in the English history.