Hereditary lords · Airgialla · as at first light, 1 January 1200

Oirthir (Ua hAnluain)

The Oirthir, the 'eastern' Airgialla round Armagh, between the primate's city, de Courcy's Ulster and the English of Uriel.

Who he is

Name
Not pinned; Gilla Patraic Ua hAnluain becomes king of Airgialla in 1201
Title
Lord of the Oirthir (Orior) and of Ui Niallain
Since
Not pinned
Born
Not pinned
Family
The Ui hAnluain (O'Hanlons)
Confidence
low

Ardgal Ua hAnluain, king of Ui Niallain, killed the king of Ulaid at Armagh in 1192. De Courcy's men make a slaughter in the Oirthir in 1200.

Overlord

The king of Airgialla; Ua Neill

What it holds

  • The Oirthir east and south of Armagh
  • Ui Niallain

How it was acquired

Dynastic right.

Allies and rivals

Enemies of de Courcy and of the Ulaid.

How things stand that morning

Held; raided.

Wealth

Cattle.

Military

Their following.

Threats

  • De Courcy (slaughter at Sliab Fuait, 1200)

What the year holds

What happened next, if nothing in play changes it. Each event carries what it depends on and what would stop it.

  1. 1200 (not pinned)De Courcy's followers make a slaughter in the Oirthir through treachery at Sliab Fuait.Depends on: War with de Courcy Stopped by: Truce

Where the sources disagree

Evidence: Annals only.

On the map: Approximate.

Primary sources for Airgialla

Chronicles, registers, sagas and inscriptions written in or near 1200 that cover this entry. Each has its own page with editions, translations and where to read it.

  • Annals of the Kingdom of Ireland by the Four Masters, Various; compiled by Micheal O Cleirigh and others (1632 to 1636, from medieval annals now partly lost). A seventeenth century compilation but it draws on lost medieval annals, so its 1200 entries add names and incidents missing elsewhere: the Connacht war and the English of Meath and Munster, the deaths of Irish kings and churchmen across the island, and raids in Thomond and Desmond. Read online
  • Annals of Ulster, Various; compiled by Cathal Mac Maghnusa (compiled about 1498 from much older annals; the entries for 1200 derive from contemporary record). The most reliable Irish annal for the north. Read online

Sources and studies

  1. Mac Carthaigh's Book 1184-1199, CELT
  2. Mac Carthaigh's Book 1200-1211, CELT
  3. Wikipedia: Airgialla (list of kings)

Last revised 4 November 2026. Published 4 November 2026. Suggest a correction on the OMNIA Discord.