The common tradition that Philip built the Escorial in pursuance of a vow which he made at the time of the great battle of St. Quentin, the 10th of August, 1557, has been rejected by modern critics, on the ground that contemporary writers, and amongst them the historians of the convent, make no mention of the fact. But a recently-discovered document leaves little doubt that such a vow was actually made.[447] However this may have been, it is certain that the king designed to commemorate the event by this structure, as is intimated by its dedication to St. Lawrence, the martyr on whose day the victory was gained. The name given to the place was _El Sitio de San Lorenzo el Real_. But the monastery was better known from the hamlet near which it stood,--_El Escurial_, or _El Escorial_,--which latter soon became the orthography generally adopted by the Castilians.[448] [Sidenote: THE ESCORIAL.] The motives which, after all, operated probably most powerfully on Philip, had no connection with the battle of St. Quentin. His father, the emperor, had directed by his will that his bones should remain at Yuste, until a more suitable place should be provided for them by his son. The building now to be erected was designed expressly as a mausoleum for Philip's parents, as well as for their descendants of the royal line of Austria. But the erection of a religious house on a magnificent scale, that would proclaim to the world his devotion to the Faith, was the predominant idea in the mind of Philip. It was, moreover, a part of his scheme to combine in the plan a palace for himself; for, with a taste which he may be said to have inherited from his father, he loved to live in the sacred shadows of the cloister. These ideas, somewhat incongruous as they may seem, were fully carried out by the erection of an edifice dedicated at once to the threefold purpose of a palace, a monastery, and a tomb.[449]