September – Confederate Wars: "Cessation" (i.e. ceasefire) arranged by Ormond places the greater part of Ireland into the hands of the Catholic Confederation.
An Calbhach mac Aedh Ó Conchobhair Donn, The Ó Conchubhair Donn, Chief of the Name of the Clan Ó Conchubhair, is popularly inaugurated as King.