Related Archive: Irish kingship

A Kingship Transformed

Archived: 26 September 2026

Abstract

In 1119, Muirchertach Ua Briain died at Killaloe, ending a weakened southern bid for island-wide overlordship as Tairdelbach Ua Conchobair expanded Connacht influence across Munster. Ireland remained divided: Domnall Ua Lochlainn retained northern power, while Ua Briain successors faced rivalry, partition and Connacht intervention. Tairdelbach’s Shannon fleet, supported by Leinster, Osraige and Dublin allies, depleted Munster’s resources, though Thomond forces suffered defeat in Kerry. The year also saw massacre of poet Cú Collchaille Ua Baigelláin’s household and Niall Ua Lochlainn’s killing, threatening northern succession. Church reform, monasteries, farming, towns and waterways underpinned political, economic and cultural life in significant ways.

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1076 CE

Murchad’s Three-Night Kingship

Archived: 26 September 2026

Abstract

In 1076, Ireland experienced fragile kingship, regional warfare, religious losses and food scarcity. Murchad Ua Mael Sechlainn claimed Tara’s supremacy at Kells but was killed after three days and nights by Amlaíb of Gailenga; Amlaíb was subsequently slain, reportedly through Colum Cille’s justice. Tairdelbach Ua Briain invaded Connacht, imprisoned Ruaidrí Ua Conchobair, then released him as a dependent ruler, demonstrating Munster’s limited ascendancy. Northern and midland rulers were killed in conflicts, including at Devenish. Churchmen, Gormlaith, queen of Munster, and scholars died. Scarcity threatened farming communities, while Ua Briain control of Dublin strengthened their power. The annals portray unstable authority.

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