Year by Year
Explore Year by Year articles from the most modern historical year back to the oldest.
3,295 Articles Archived
Cellach's Accession
Archived: 26 September 2026
In 1105, rivalry between Muirchertach Ua Briain of Munster and Domnall Ua Lochlainn of the north continued without decisive resolution. Muirchertach campaigned in Mide, expelled Donnchad Ua Máel Sechlainn, seized livestock, secured hostages and sought to reshape midland politics. Dynastic killings and deaths underlined regional instability. Armagh’s head, Domnall son of Amalgaid, attempted mediation in Dublin but died; his successor Cellach began an important, though gradual, reforming ecclesiastical leadership. Heavy snow devastated livestock, exposing rural vulnerability. Meanwhile, a camel from Alba, a huge fish near Limerick, and clerical notices reveal maritime links, economic activity and enduring learned religious communities alike.
Northern Ascendancy
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.
Mag Coba
Archived: 26 September 2026
In 1103, Ireland remained divided between Muirchertach Ua Briain, dominant in the south, and Domnall Ua Lochlainn of Ailech. Muirchertach led a coalition from several kingdoms, including Dublin, against the Ulaid and Domnall, but divided his forces after campaigning near Armagh. On 5 August Domnall defeated the remaining coalition at Mag Coba, killing regional kings and nobles and capturing royal insignia. The victory checked southern ambitions without ending Muirchertach’s power. Later that month Ulaid killed Norway’s King Magnus Barelegs, ending his Irish expansion. Annals also note churchmen, learning, scholarship, rural life, economies, Dublin trade, local conflicts, and a rare birth.
Fragile Truces
Archived: 26 September 2026
In 1102, Ireland experienced negotiated truces rather than unity, as Muirchertach Ua Briain and Domnall Ua Lochlainn balanced competing claims to national authority. Armagh held hostages securing their one-year agreement, although raids and killings continued across Ulster, Connacht, Bréifne and Meath. Muirchertach also confronted Magnus Barelegs’ fleet before forging a marriage alliance with Magnus’s son Sigurd, and linked his dynasty to Norman rebel Arnulf de Montgomery. Churches served as guarantors, learning centres and targets for attack. Rural communities bore warfare’s economic burden, while ports sustained Irish Sea trade. These fragile personal settlements reorganised conflict, preceding renewed campaigns thereafter in 1103.
Cashel Aileach
Archived: 26 September 2026
In 1101, Ireland remained divided between Muirchertach Ua Briain of Munster and Domnall Ua Lochlainn of Aileach, neither an uncontested high king. Muirchertach enhanced his authority by granting Cashel’s royal site to the Church, supporting reform and weakening Éoganachta claims. His coalition’s circuit through Connacht and the north destroyed Aileach, extracted hostages, and ravaged communities, yet failed to defeat Domnall. Local cattle raids, dynastic killings and church attacks continued. Armagh secured release of Ulaid king under sacred oaths. Seaborne raiders plundered Inis Cathaig amid Scandinavian pressure. Good harvests coexisted with cattle disease, while religious and learned institutions sustained collective memory.
Rival Overkings
Archived: 26 September 2026
In 1100 Ireland remained divided among local and provincial kings, as Muirchertach Ua Briain of Munster and Domnall Ua Lochlainn of Ailech contested supremacy. Muirchertach’s northern expedition to Eas Ruaidh failed, Leinster raided Airgialla, and Dublin’s fleet was destroyed in Inis Eógain. Domnall retaliated by ravaging Brega and Fine Gall and captured Donnchad Ua hEochada, king of Ulaid. Deaths of rulers and churchmen altered regional politics. Warfare burdened rural communities, while Dublin’s maritime economy remained important. Monasteries sustained learning, pilgrimage and mediation. Neither overking prevailed; their struggle intensified before Muirchertach’s major 1101 campaign, which devastated Ailech and displayed southern power.
Armagh Truce
Archived: 26 September 2026
In 1099, Ireland remained politically divided as Muirchertach Ua Briain and Domnall Ua Lochlainn confronted one another at Sliabh Fuaid. Armagh brokered a year-long truce, preventing battle without resolving their rivalry. Domnall then defeated Ulaid at Cráeb Telcha, took hostages, burned its camp and felled its inauguration tree. Midland warfare killed Tethba leaders, while Airthir’s king died. A nationwide epidemic and fires at Kells, Kildare and Ardstraw compounded disruption. Church institutions continued through episcopal appointment and clerical deaths. Ireland’s communities and Dublin’s trade sustained wider Irish Sea connections, including Norse activity and Welsh exiles. The year combined restraint with violence.
Fragmented Kingship
Archived: 26 September 2026
In 1098, Ireland remained divided among competing kings, with Muirchertach Ua Briain’s northern campaign checked by Domnall Ua Lochlainn, while succession disputes devastated Meath, Leinster, Connacht and other regions. Cenél nEógain defeated Cenél Conaill, and Ulaid captured three ships of unnamed Isles foreigners, probably linked to Magnus Barelegs’ western expedition. Deaths of reformer Domnall Ua hÉnna and numerous bishops, scholars and clerics highlighted active religious networks and emerging church reform. Rain, fertility and heavy snow shaped rural life; fires damaged Cork and Clonmacnoise. The chronicles depict political fragmentation, local violence, maritime connections, learning, pilgrimage and resilient ecclesiastical centres throughout Ireland.
Fid Conaill
Archived: 26 September 2026
In 1097, Muirchertach Ua Briain led a southern coalition to Mag Muirtheimne, where Domnall Ua Lochlainn’s northern army confronted it at Fid Conaill. Abbot Domnall of Armagh brokered an uneasy peace, demonstrating ecclesiastical influence without ending royal rivalry. Connacht suffered renewed instability after Tadc Ua Conchobair’s killing and Flaithbertach Ua Flaithbertaig’s contested restoration. Regional rulers died or were killed, while notable churchmen also died. Fire destroyed books and treasures at Monasterboice. Exceptionally abundant nuts fattened swine, lowered prices and supported food supplies. The annals thus depict political conflict, cultural loss, church diplomacy and rural economic abundance across late eleventh-century Ireland.
Waterford Bishopric
Archived: 26 September 2026
In 1096 Ireland remained politically fragmented despite Muirchertach Ua Briain’s southern overlordship, as Domnall Ua Lochlainn challenged him and regional rulers fought, raided and died in feuds. Muirchertach rebuilt Kincora, restoring Ua Briain prestige after its 1088 destruction, while Irish Sea links were marked by death of his nephew on Man. Fear of a calendrical omen, intensified by recent mortality, prompted island-wide fasting, almsgiving and church grants. Lightning burned Limerick. Waterford’s Malchus was consecrated by Anselm of Canterbury, establishing an urban bishopric connected to ecclesiastical reform. The year combined dynastic consolidation, insecurity, clerical authority and growing international religious maritime ties.
Some records do not yet have a verified historical year and are awaiting chronological placement.