A brief truce ensued with Harold, who had been opposing them, and then the struggle began afresh. The tables were now completely turned. Harold's memorable invasion of Wales took place, in which he was assisted to success by the many enemies Griffith had made in his high-handed annexation of Deheubarth. The Welsh Prince, after a stirring reign of thirty-four years, perished during this campaign of 1061 at the hand of a hired assassin. His head, like that of many another Welsh leader, was sent across the border in a basket, and received at Gloucester by Harold with much demonstrative satisfaction. The latter, in the meantime, had marched to the Conway, and afterwards through South Wales. He had been victorious everywhere; and now nominated fresh rulers to the vacant thrones of Gwynedd and Deheubarth, under promise of vassalage to the English Crown.
The tenure of the three Welsh Princes was always complicated and, indeed, liable to fluctuation with the balance of power, both in Wales and across the border. In theory, Powys and South Wales owed lip homage and a nominal tribute to the Prince of Gwynedd as "Pendragon." The latter, on behalf of Wales, owed a similar service to the King of England and, as I have mentioned before, was not inclined to dispute it so long as his independence was respected. Harold's so-called conquest only altered matters to the extent of making the three Welsh provinces theoretically equal and individually vassals of the English Crown. This paper arrangement would have probably remained a dead letter or would have been maintained just so long as there was an arm strong enough to maintain it. But a people were coming to eliminate the Saxon as an aggressive power, and to take his place,--a people who would not be satisfied with lip homage and occasional tribute.
The great struggle in England between Norman and Saxon seemed by the mere force of contagion to set the Welsh Princes once more by the ears. Some of them, however, in accordance with their generous tradition of loyalty to the soil of the Britain they had lost, joined the West Saxons in their resistance to this new and formidable foe. Others essayed to make use in their domestic quarrels of the crafty Norman, who was only too glad to get a finger so cheaply into the Welsh pie.