A Kingship Unravels
Ireland entered 1114 without a single, uncontested high king. Muirchertach Ua Briain, the powerful ruler of Munster, had nevertheless exercised authority across much of the island and was styled “king of Ireland” by several annalists. His principal rival was Domnall Ua Lochlainn, king of Ailech and dominant ruler of the north. Between them stood ambitious provincial and regional kings whose support could change rapidly. The balance depended upon personal strength, military success, hostages, negotiated submissions and alliances reinforced by marriage, fosterage and the authority of the Church. During 1114 that balance broke apart. Muirchertach’s grave illness weakened the Uí Briain ascendancy, encouraged rebellion within his own dynasty and opened opportunities for Domnall Ua Lochlainn and the rising Connacht ruler Tairdelbach Ua Conchobair.