Archived: 26 September 2026
Abstract
In 1126, Toirdelbach Ua Conchobair exploited the death of Leinster’s king to secure hostages, obtain Dublin’s submission and install his young son Conchobar as ruler of Dublin and, according to some annals, Leinster. From a long encampment in Ormond, he campaigned against Desmond, Osraige and other regions, taking cattle, captives and tribute. Raiding and counter-raiding also affected Connacht, Tír Conaill and the north-east, revealing unstable alliances and local conflict. Cellach of Armagh sought to restrain warfare while advancing church reform and consecrating a stone church. Cork burned, learned clerics died, and Toirdelbach’s extensive but coercive ascendancy remained fragile throughout Ireland.
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Archived: 26 September 2026
Abstract
In 1127, Tairdelbach Ua Conchobair, king of Connacht, invaded Munster by land and sea, plundered Cork, displaced Cormac Mac Carthaig and partitioned the province. Cormac’s restoration from Lismore, backed by Ua Briain allies, quickly overturned this settlement, while hostage threats and naval conflict exposed its brutality. Tairdelbach’s son was expelled from Dublin and Leinster, and disputes in Kildare and Ulaid demonstrated persistent regional autonomy. Churchmen mediated politics, religious centres remained influential, and sacred objects expressed power. Warfare burdened ordinary communities, despite continuing trade, scholarship and artistic patronage, confirming limits to Tairdelbach’s high-kingship across Ireland during the unstable and contested year.
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Archived: 26 September 2026
Abstract
In 1128 Ireland was marked by warfare, shifting alliances and ecclesiastical intervention. Toirdelbach Ua Conchobair raided Leinster, Wexford and Dublin, reaffirming Connacht’s reach after resistance to his rule. Tigernán Ua Ruairc suffered defeats amid northern and midland conflicts, while attacks on Cellach of Armagh’s entourage brought moral condemnation. Conchobar Mac Lochlainn expanded power through hostages and victories but was censured for burning Trim’s churches. Local rulers also faced violent succession struggles. Cellach negotiated a temporary Connacht–Munster peace, demonstrating Armagh’s diplomatic influence. Church offices remained politically contested, while ports, cattle wealth, monasteries and the Cross of Cong reflected Ireland’s connected culture.
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Archived: 26 September 2026
Abstract
In 1118, Diarmait Ua Briain’s death intensified Munster’s succession crisis and enabled Toirdelbach Ua Conchobair of Connacht to reshape southern politics. After fighting near Glanmire, where Brian Ua Briain was killed, Toirdelbach allied with Tadc and Cormac Mac Carthaig. He allocated Desmond to Mac Carthaig and Thomond to Diarmait’s sons, securing obedience through hostages and weakening Uí Briain supremacy. He also attacked Kincora and extended influence over Dublin, Leinster and Osraige. Regional warfare continued elsewhere. Royal deaths, church affairs, learning and burdens of military hostings reflected a society unsettled by conflict. The unstable partition nevertheless established Munster’s enduring political division.
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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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Archived: 26 September 2026
Abstract
In 1120, Ireland remained divided among competing rulers rather than subject to a single high king. Toirdelbach Ua Conchobair of Connacht invaded Meath, expelling Murchad Ua Máel Sechlainn despite disputed ecclesiastical guarantees, before confronting Domnall Mac Lochlainn at Athlone; their peace proved fragile. Toirdelbach reinforced power by building three strategic bridges and celebrating Tailtiu’s royal assembly. In Munster and Osraige, hostage-taking, payments and imprisonment exposed overlapping claims. Cellach of Armagh visited Munster, collecting dues and affirming church influence in diplomacy and reform. Regional killings, trade, agriculture and labour underpin the annals’ portrait of political conflict, mobility and contested authority throughout.
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Archived: 26 September 2026
Abstract
In 1121, Domnall Ua Lochlainn’s death ended the northern overking’s role as Connacht’s principal counterweight, strengthening his son-in-law Toirdelbach Ua Conchobair’s claim to wider supremacy. Toirdelbach invaded Munster, devastating territories, churches and Lismore’s protected lands, taking cattle and hostages, and attempting to balance Mac Cárthaigh and Uí Briain interests. His forces nevertheless suffered notable losses. Church politics saw Armagh’s Cellach temporarily assume Dublin’s bishopric amid reform and Canterbury connections. Regional feuds killed several rulers, including one at Bangor cemetery. Fires and storms damaged ecclesiastical settlements at Telach Inmainne and Armagh, revealing communities vulnerable to warfare, disaster, tribute and shifting lordship.
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Archived: 26 September 2026
Abstract
In 1122, Tairdelbach Ua Conchobair of Connacht emerged as Ireland’s foremost overking, exploiting northern weakness after Domnall Ua Lochlainn’s death. He secured Munster’s division through submission, capture and installation of rival rulers, campaigned in Mide and towards Lough Erne, and received Leinster-Dublin recognition. Nevertheless, northern raids, Ulaid dynastic conflict and midlands warfare showed authority remained contested. Annals also record cattle raiding’s human and economic burden, revealing rural wealth and royal logistics. Ecclesiastical life saw relic discovery at Lann, prominent clerical deaths, pilgrimage, learning and gradual reform alongside older offices. Connacht’s ascendancy was influential, but Ireland remained politically fragmented in practice.
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Archived: 26 September 2026
Abstract
In 1123, Tairdelbach Ua Conchobair, Connacht’s dominant king, campaigned through southern Ireland, securing Desmond hostages amid Mac Carthaig succession disputes and asserting, rather than fully controlling, high-kingship. In Mide, Gailenga attackers burned Murchad Ua Máelshechlainn’s residence at Duleek, exposing regional instability. Violence also struck Emly’s church and Osraige. A fragment of the True Cross reached Ireland; Tairdelbach secured part for Roscommon and commissioned the Cross of Cong, combining devotion, patronage and artistry. Clerical deaths and pilgrimage reflected church reform. Annals also reveal warfare’s effects on agrarian life, urban trade, maritime travel, and fragile local allegiances throughout Ireland’s contested political order.
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Archived: 26 September 2026
Abstract
In 1124 Tairdelbach Ua Conchobair, Connacht’s dominant king, faced a broad alliance led by rulers of Desmond, Leinster, Meath and Bréifne. He transported a fleet around Doonass, campaigned along the Shannon, established a longphort, raided rebellious territories and executed Desmond hostages, forcing opponents to disperse. Connachtmen built fortifications at Galway, Cúl Maile and Dún Leodha, strengthening strategic routes. Regional killings, raids and an accident involving Tara’s king reflected continuing instability. Church reform advanced through Malachy’s consecration as bishop of Connor, Bangor’s church and Clonmacnoise’s tower. Limerick suffered a devastating fire. Tairdelbach retained supremacy, but required constant warfare, negotiation and infrastructure.
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