Stephen, King of England succession. Stephen's new Anglo-Norman kingdom had been shaped by the Norman conquest of England in 1066, followed by the Norman expansion into south Wales over the coming years. Both the kingdom and duchy were dominated by a small number of major barons who owned lands on both sides of the English Channel, with the lesser barons beneath them usually having more localised holdings. The extent to which lands and positions should be passed down through hereditary right or by the gift of the king was still uncertain, and tensions concerning this issue had grown during the reign of Henry I.
John, King of England successfully increased the size of his lands in Ireland, and he continued this policy as king. In 1210 the king crossed into Ireland with a large army to crush a rebellion by the Anglo-Norman lords; he reasserted his control of the country and used a new charter to order compliance with English laws and customs in Ireland. John stopped short of trying to actively enforce this charter on the native Irish kingdoms, but historian David Carpenter suspects that he might have done so, had the baronial conflict in England not intervened. Simmering tensions remained with the native Irish leaders even