Power After Mag Coba
Archived: 26 September 2026
In 1104, Ireland remained unsettled after Domnall Ua Lochlainn’s victory over Muirchertach Ua Briain’s coalition at Mag Coba. Domnall strengthened northern influence, possibly taking Ulaid hostages and raiding towards Tara, although later sources make dating uncertain. Muirchertach reportedly retaliated in Mag Muirthemne by destroying crops, illustrating warfare’s economic damage. Ulaid defeated Dál Araide, while local rulers died through accidents, feud and conflict. Ecclesiastical life continued through bishops’ and scholars’ deaths, church roofing at Clonmacnoise, manuscript culture, and gradual reform. Ports, agriculture, tribute, alliances and hostage-taking underpinned shifting regional power; no ruler permanently controlled Ireland across its competing kingdoms at all.
