While Henry was occupied with these affairs, events in France were rapidly bringing on a change which was destined to be of the utmost importance to England and the Angevin house. Louis VII had now reigned in France for more than forty years. His only son Philip, to be known in history as Philip Augustus, born in the summer of 1165, was now nearly fifteen years old, but his father had not yet followed the example of his ancestors and had him crowned, despite the wishes of his family and the advice of the pope. Even so unassertive a king as Louis VII was conscious of the security and strength which had come to the Capetian house with the progress of the last hundred years. Now he was growing ill and felt himself an old man, though he was not yet quite sixty, and he determined to make the succession secure before it should be too late. This decision was announced to a great council of the realm at the end of April, 1179, and was received with universal applause. August 15 was appointed as the day for the coronation, but before that day came the young prince was seriously ill, and his father was once more deeply anxious for the future. Carried away by the ardour of the chase in the woods of Compiegne, Philip had been separated from his attendants and had wandered all one night alone in the forest, unable to find his way. A charcoal-burner had brought him back to his father on the second day, but the strain of the unaccustomed dread had been too much for the boy, and he had been thrown into what threatened to be a dangerous illness. To Louis's troubled mind occurred naturally the efficacy of the new and mighty saint, Thomas of Canterbury, who might be expected to recall with gratitude the favours which the king of France had shown him while he was an exile. The plan of a pilgrimage to his shrine, putting the king practically at the mercy of a powerful rival, was looked upon by many of Louis's advisers with great misgiving, but there need have been no fear. Henry could always be counted upon to respond in the spirit of chivalry to demands of this sort having in them something of an element of romance. He met the royal pilgrim on his landing, and attended him during his short stay at Canterbury and back to Dover. This first visit of a crowned king of France to England, coming in his distress to seek the aid of her most popular saint, was long remembered there, as was also his generosity to the monks of the cathedral church. The intercession of St. Thomas availed. The future king of France recovered, selected to become--it was believed that a vision of the saint himself so declared--the avenger of the martyr against the house from which he had suffered death.