Still there were some few whose sanctity opposed, with energy, the Emperor's designs. The Archbishop Conrad of Mayence, of the house of Wittelsbach, and the Archbishop Conrad of Salzburg, uncle to the Emperor, protested loudly against this usurpation. They were at once declared enemies of the Empire, deprived of their bishoprics, and forced to seek safety in Italy. These brutal examples, however, produced the desired results; and the orders of the powerful monarch were henceforward obeyed literally and implicitly. The position assumed by Henry of England towards Pope Alexander, also favored Frederic's projects. The cruel and despotic English King ruled his Church according to his own caprices. The cloisters and monasteries were, in his opinion, mere places whence to draw supplies for his material wants; and many of the bishoprics were left unoccupied, while their revenues were appropriated to the royal treasury. The celebrated St. Thomas à Becket, Archbishop of Canterbury, resisted, with all his energy, the tyranny of the sovereign; but at the royal instigation, he was slain on the steps of the altar, and all friendly relations between Alexander and Henry were suspended. These circumstances came very opportunely to the aid of Frederic's projects. Rinaldo was sent to London to contract an alliance with England, and in order to cement it, a daughter of the King was affianced to the son of Barbarossa, and Henry the Lion to another princess of the royal family of England. Italy was quiet, although the people chafed under the Imperial yoke, and were silently preparing for revolt. The fire smouldered amid the ashes, but since the terrible chastisement inflicted upon Milan, no city dared to raise the standard of liberty. In the year 1167, Barbarossa entered Italy with a numerous army and marched towards Rome, from which he wished to expel Alexander, who had returned to the city aided by King William of Naples. The Lombards had hoped that Frederic's justice would alleviate their distress, and an enormous crowd came with complaints against his Imperial agents. The complaints were listened to, but the grievances were not often redressed, and so soon as he was fairly on his way to Rome, the Lombard confederation was formed. It was at first weak and secret, but still it served as a happy presage and an encouragement to the oppressed inhabitants. Guido of Castellamare, faithful to his plighted word, remained at his home and abstained from any hostile act.