In England, on the contrary, where the king had been not nearly so much in the hands of the barons as the early Capetian kings of France had been, the barons gained more and more power until, in 1215, we find King John compelled by his barons to allow his seal to be affixed to Magna Carta. This charter gave Englishmen the beginnings of their liberty at the very time when the King of France was effectually establishing the autocratic power of the Crown over all French subjects.
Henry II., although his kingdom was so extensive in England and on the Continent, expanded it yet more widely by a complete and effective conquest of Ireland, and also by receiving homage from the King of Scotland, whom his armies had defeated at Alnwick and made prisoner.
We have seen very little of Scotland in the course of the great story, and little of Ireland since we saw the priests of the Irish Church coming westward and converting the heathen to Christianity. Scotland had for centuries, from the time of the Romans in Britain and probably long before that, been a troublesome neighbour to England on the north boundary. We have seen that boundary shifted once or twice as the forces on one side or on the other prevailed. But Scotland, in her attacks upon England, never succeeded in penetrating very far south, and therefore did not take any very important part, at that time, in the making of the story. And now Henry had the Scottish king prisoner and doing homage to him. That homage gave the King of England the position of feudal lord over the King of Scotland. But feudal vassals, as we have seen, were not always quite subservient to their lords. The Scottish kings were no exception, and they acted very much as if they were no less independent than before.
Ireland
But the conquest of Ireland was different, and complete. Ireland, lying out in the western sea, had escaped the incursions of the Saxons, the Danes, and the Normans that had fallen upon England. Sea-rovers had constantly harried her coasts, as they harried every coast within reach of their sails and oars, and made some settlements there; but the island as a whole had not been overrun by any invaders since the coming of the Celts.
In Ireland, thus cut off from the rest of the world, the Church went its own way in less dependence on the Pope at Rome than, any other in all the Western world. In the Eastern Empire and in all the vast territories of the Slavs the Patriarch at Constantinople was looked up to as the head of what came, in later days, to be known as the Greek Church. It conducted its services rather differently from the Roman Church, and there were some differences in the doctrines of the two. The Church of Constantinople was too strong for the Church of Rome to prevail against it in the East, but Rome claimed universal spiritual authority in the West.
The Pope, moreover, by virtue of a before-mentioned deed signed by Constantine, and called the Donation, or gift, of Constantine, was reputed to have authority over all islands. It did not matter that this famous Donation, or the deed by which it was supposed to be instituted, was strongly suspected to be a forgery, nor did it matter that even if it really were drawn up by Constantine and signed by him, his right to give away authority over "islands" was not quite clear, although he were the emperor of the world. No matter. This gift of "islands," though the document, or deed, was doubtful, was destined to play an important part in the world's story when that story began to be concerned with the discoveries of new continents and islands.
For the moment it served to authorise the Pope to give our Henry II. a mandate to conquer Ireland, and to bring its Church into subservience to Rome. The Pope was Adrian IV., the first, and the only, Englishman who ever held that highest spiritual honour. His behests were willingly and easily obeyed. Ireland, divided between several local chieftains, or kings, did not resist Henry's armies long; and so became subjugated to England. And by thus bringing Ireland into the fold of the Church Henry made some atonement to Rome for that infamous murder, in Canterbury Cathedral, of the Archbishop Thomas, sometimes called à Becket, which was done by some of his knights who thought to give him pleasure by its doing, even if he had not directly bidden it.
The differences between Henry and his archbishop had risen out of that question of "investitures," that is of who should have the appointments to the high offices in the Church (whether those appointments should be made by the Crown or should be kept in the hands of the clerical party), which was the cause of much trouble, and actual fighting, in many lands. The solution of the trouble, as has been noted already, was found in the arrangement that the Church should appoint its own officials for all spiritual offices, but that for its earthly possessions it should do homage to the sovereign of the country in which they lay. The appointment of the Pope himself was put into the hands of a College of Cardinals: that is, of high Church officials.