1186 in Ireland

Events from the year 1186 in Ireland.

Incumbent

 * Lord: John

Events

 * Stephen Ridell appointed as first Lord Chancellor of Ireland.
 * Hugh de Lacy the Elder, 1st Lord of Meath, is assassinated.
 * Ruaidrí Ua Conchobair is usurped as King of Connacht by his son Conchobar Maenmaige Ua Conchobair.
 * Approximate date of the construction of Ardfinnan Castle

Deaths

 * 25 July – Hugh de Lacy, Lord of Meath, 4th Baron Lacy