Year by Year
Explore Year by Year articles from the most modern historical year back to the oldest.
3,295 Articles Archived
Déisi Reprisal
Archived: 26 October 2026
In 985, Ireland remained divided among competing regional kingships rather than united under a single state. Máel Sechnaill of Mide raided Connacht, destroying crannógs and killing chieftains, while internal conflict included the death of Fearghal of the Fiachra kindred. In Munster, Brian son of Cennétig retaliated after Déisi men stole three hundred cattle from his mercenaries, devastating the territory and pursuing Domnall son of Faelán to Waterford. An abundant mast crop aided rural livestock husbandry. Leinster’s king, Diarmait son of Uathmarán, died. Annals securely date these events to 985, illustrating warfare, resources, local authority and unstable political relationships across Ireland.
Mag Aí
Archived: 26 October 2026
In 984 Máel Sechnaill mac Domnaill, king of Mide and Tara, campaigned into Connacht, burning Mag Aí, killing leading men and attacking island settlements, probably crannogs. Connacht retaliated eastwards at Loch Aininn, or Lough Ennell, burning land and killing the king of Fir Chell. Annalistic dating varies between 984 and 985, reflecting chronological differences rather than separate campaigns. Deaths of ecclesiastical leaders, including Fogartach Ua Congaile of Daiminis, highlighted churches’ political and learned importance. Domnall Claen of Leinster was killed by Uí Cheinnselaig rivals. Together, these events reveal interconnected lordships, warfare, ecclesiastical authority and unstable regional kingship in tenth-century Ireland.
Glendalough Plunder
Archived: 26 October 2026
In 983, amid disputed annalistic dating, Ireland experienced overlapping conflicts rather than a unified war. Máel Sechnaill of Mide and his Dublin half-brother Glún Iairn routed Domnall Claen of Leinster and Ímar of Waterford, then ravaged Leinster. Dubliners plundered the wealthy monastic centre of Glendalough, illustrating the town’s complex political role. Brian mac Cennétig launched a fleet expedition into Connacht, suffered losses, and extended pressure through Osraige and Leinster by plunder and hostage-taking. Annals note ecclesiastical deaths at Lismore and Armagh, revealing institutions enduring amid warfare. The year demonstrates interconnected yet fragmented powers competing through kinship, raiding, waterways and coercion.
Mag Adair
Archived: 26 October 2026
In 982, Máel Sechnaill mac Domnaill, king of Tara, raided Dál Cais territory and uprooted the Tree of Mag Adair, an inauguration symbol challenging Brian’s growing Munster power. Annalistic dating varies, but several sources connect these events with 982. Munster forces raided Osraige, gaining booty but suffering losses, while Ímar of Waterford plundered or destroyed Kildare, exposing the wealth and vulnerability of major churches. Deaths and killings among rulers in Leinster, Ulster, Connacht and smaller kingdoms highlighted unstable successions. The year reveals Ireland as interconnected competing lordships, where raids, sacred sites, ecclesiastical wealth and dynastic authority shaped political power throughout.
Bishop Anmchad
Archived: 26 October 2026
In 981, Irish annals recorded local political, ecclesiastical and environmental developments rather than a unified national story. Domnall ua hAitid, king of Uí Echach, and Loingsech son of Fogartach of Uí Nialláin killed one another, exposing fragility of regional lordship. Anmchad, elderly bishop of Kildare, died, confirming that church’s wide authority. Deaths also included successors of saints Feichín, Brendan and Comgall, whose communities sustained property, ritual and learning across Ireland. Although Máel Sechnaill’s previous victory had strengthened midland overkingship, regional rivalries endured. An unusual mast-crop highlighted woodland’s economic importance for pigs, provisioning and seasonal resources throughout early medieval Irish society.
Tara Victory
Archived: 8 October 2026
In 980, amid succession following Domnall ua Néill’s death, Máel Sechnaill mac Domnaill of Clann Cholmáin defeated Dublin and Isles forces at Tara. The victory, although not an expulsion of Norse power or unification of Ireland, enhanced his claim to wider supremacy. With Eochaid of Ulaid, he besieged Dublin for three days, securing hostages, tribute, release from Dublin’s exactions, and freedom for some Irish people held in bondage. Ragnall, Dublin’s heir, died in battle, while Amlaíb Cuarán retired penitently to Iona. Dublin’s commerce endured, but its political influence declined. Church deaths and regional killings exposed Ireland’s continuing fragmented, unstable kingship.
Domnall’s Captivity
Archived: 26 October 2026
For Ireland, 979 is a year best approached through a small but unusually revealing cluster of annalistic notices. No surviving source supplies a continuous narrative, and none explains every motive or consequence. Yet the recorded capture of Domnall Claen, king of Leinster, by the foreigners of Dublin exposes the political weight of the Hiberno-Norse town at the mouth of the Liffey. Deaths and killings among rulers in Offaly, Dál Araide and Cenél Conaill show, at the same time, that power remained fragmented across many regional kingdoms. Notices of a Kildare church leader, a Clonmacnoise scholar-cleric and a foremost man of learning reveal another Ireland: one sustained by religious institutions, literacy and remembered expertise.
Belach Lechta
Archived: 26 October 2026
In 978, Ireland’s annals record conflict, illustrating fragmented authority among regional kings, churches and maritime powers. At Belach Lechta, Brian son of Cennétig defeated and killed Máel Muad of Cashel, securing leadership in Munster after his brother Mathgamain’s death and establishing the basis for his later ascendancy. Cork and Lismore were plundered and burned, though attackers and circumstances remain unknown. Dublin defeated Leinster at Bithlann, killing King Úgaire, while Airgialla routed Cenél Conaill in the north. Fiachra, superior of Iona, died. These events disrupted communities dependent on farming, cattle, church wealth and lordship, redistributing power without creating a unified Ireland.
Amlaíb’s Killings
Archived: 26 October 2026
In 977, Amlaíb Cuarán, Scandinavian-Gaelic ruler of Dublin, killed Muirchertach son of Domnall ua Néill and Congalach son of Domnall, both designated royal heirs of Ireland. Their deaths weakened Domnall, king of Tara, amid contested Uí Néill succession, illustrating Dublin’s influence within intertwined Irish and Viking dynasties. Domnall also killed Gilla Coluim ua Canannáin, lord of Cenél Conaill. Annals record Conaing, successor of Moedóc, dying, while Chronicon Scotorum chronologically associates Domnall’s plundering of Adomnán’s shrine with 977. Irish sources also noted a Scottish royal killing, reflecting Irish Sea connections. Misdated records exclude Leinster and Kildare events from this calendar year.
Mathgamain’s Betrayal
Archived: 26 October 2026
In 976, Ireland experienced political upheaval marked by Mathgamain son of Cennétig’s treacherous killing after Donnubán of Uí Fidgente surrendered him to Máel Muad despite guarantees. His death disrupted Dál Cais ascendancy in Munster, leaving Brian’s future leadership uncertain. Donnchad of Osraige and Domnall of Brega also died, while Tadc of Cianachta and Máel Sechnaill of Gabair were killed. Ecclesiastical authority remained influential yet vulnerable: Conaing died, Colum Cille’s shrine was plundered, and Nendrum’s superior was burned. Annals depict fragmented, negotiated power, linking kingship, churches, warfare and Norse-Gaelic involvement across Ireland while stressing continuity in ordinary life beyond recorded events.
Some records do not yet have a verified historical year and are awaiting chronological placement.