The following is a list of events from the year 1112 in Ireland.
Incumbents High King of Ireland: Domnall Ua Lochlainn
Events
Muirchertach Ua Briain, king of Munster and dominant figure, led a hosting (military expedition) into Connacht in 1112. The fort of Ard-Macha, with its church, was burned on April 10, along with 2 streets of Trian-Masan.
Deaths
Ughaire Ua Lorcain, lord of Ui-Muireadhaigh
Reference