In a state of nervous excitement, and mistrusting his nobles, the King himself perpetually moved to and fro in his kingdom, seldom staying more than a few days in one place. None the less did he continue his old line of policy. Sums of money were still frequently demanded, and sent out of the kingdom to support the cause of Otho, who, having procured the assassination of his rival, was again making head in Germany. Nor did he refrain from carrying out a policy which in any other king would have been accepted as national and good. The loss of the French provinces had thrown England back upon itself, and the country now seemed inclined to seek a surer foundation for its power in the more complete subjection of the immediately surrounding nations. Thus William the Lion of Scotland was compelled, by the advance of an English army, to make a treaty which was in fact a complete submission to England. He was obliged to pay a large sum of money, and to give up into the hands of John his daughters Margaret and Isabella, as well as hostages drawn from the noblest families of the country; while some years later, in 1212, his son Alexander appeared in London, and was knighted and swore fealty to the King. [Sidenote: Ireland.] [Sidenote: Wales.] [Sidenote: Disaffection of the Northern barons.] Shortly after this success in the North, John betook himself to Ireland, where quarrels had arisen between the angry Irish nobles, and where Hugh de Lacy had suppressed his rival John de Courcy, and, being enfiefed with the kingdom of Ulster, had arrogated to himself rights closely touching upon royalty. John raised supplies from the English towns, and crossed over to Waterford. He there succeeded in establishing order, and having introduced the English form of administration, returned to England, leaving John de Grey, Bishop of Norwich, behind him as his representative. He then directed his arms towards Wales. Along the marches of that country there was constant strife, as the Lords Marchers erected new castles and encroached upon their neighbours. In 1211 the King marched through the country, and received at the foot of Snowdon the submission of Llewellyn, his son-in-law,[34] and other princes. A fresh outbreak, accompanied by the usual cruel slaughter of the garrisons of the castles, roused his anger. At Nottingham he had all the Welsh hostages he had taken under the late treaty hanged, and was preparing for further vengeance when news reached him of the discontent of the Northern barons. He was induced therefore to direct his arms against them, filled Northumberland with his foreign mercenaries, and seized fresh hostages from his suspected nobles. [Sidenote: The King’s rapacity.]