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.
Norman invasion of Ireland had the backing of King Henry II of England and was authorized by Pope Adrian IV. In the summer of 1170, there were two further Norman landings, led by Richard "Strongbow" de Clare. By May 1171, Strongbow had assumed control of Leinster and seized the Norse-Irish city kingdoms of Dublin, Waterford, and Wexford. That summer, High King Ruaidrí Ua Conchobair (Rory O'Connor) led an Irish counteroffensive against the Normans, who nevertheless managed to hold most of their conquered territory. In October 1171, King Henry landed with a large army in Ireland to establish control over both the Anglo-Normans and the