1212 in Ireland

Incumbents

• Lord: John

Events

• Aedh Ua Neill, king of Cenel-Conaill and of Cenel-Eogain attacked a great deal of foreigners, wherein were killed a countless number of them.
• Monastic reform orders like the Cistercians continued to expand in Ireland.

Deaths

• Donal O'Kennedy, bishop of Killaloe