Events

• Death of Muircheartach Ó Briain, king of Thomond
  Thomond
  Thomond The region of Ireland associated with the name Thomond is County Clare, County Limerick and north County Tipperary; effectively most of north Munster. The name is used by a variety of establishments and organisations located in , or associated with the region...
  
  . Succeeded by his brother, Diarmaid, who is expelled by Brian Bán Ó Briain
• Toirdhealbhach Ó Conchobhair recovers kingship of Connacht
  Connacht
  Connacht , formerly anglicised as Connaught, is one of the Provinces of Ireland situated in the west of Ireland. In Ancient Ireland, it was one of the fifths ruled by a "king of over-kings" . Following the Norman invasion of Ireland, the ancient kingdoms were shired into a number of counties for...
  
   from Aodh mac Aodh B reifneach. Makes peace with Mac Diarmada
• King Niall Ó Domhnaill of Tir Conaill is deposed by his nephew Aonghus, with aid and support from O Baoighill, Ó Dochartaigh, the MacSweenys and Aodh Reamhar Ó Neill.
• Clann Mhuircheartaigh expelled from Bréifne by Ualgharg Ó Ruairc, O Conchobhair, and Tadgh Mág Ragnaill. Given refuge by King Aonghus of Tír Conaill in Tír Aodha (Tirhugh, County Donegal
  County Donegal
  County Donegal is a county in Ireland. It is part of the Border Region and is also located in the province of Ulster. It is named after the town of Donegal. Donegal County Council is the local authority for the county...
  
  ).
• Clanricarde
  Clanricarde
  Clanricarde was a term meaning both a territory and a title in Ireland between the 13th and early 20th centuries.-Territory:The territory, in what is now County Galway, Ireland, stretched from the barony of County Clare in the north-west along the borders of County Mayo, to the River Shannon in the...
  
   and de Berminghams invade Uí Maine
• Maurice Earl of Desmond
  Earl of Desmond
  The title of Earl of Desmond has been held historically by lords in Ireland, first as a title outside of the peerage system and later as part of the Peerage of Ireland....
  
   occupies Imokilly (east County Cork
  County Cork
  County Cork is a county in Ireland. It is located in the South-West Region and is also part of the province of Munster. It is named after the city of Cork . Cork County Council is the local authority for the county...
  
  )
• May 19 Robert Savage appointed Seneschal
  Seneschal
  A seneschal was an officer in the houses of important nobles in the Middle Ages. In the French administrative system of the Middle Ages, the sénéchal was also a royal officer in charge of justice and control of the administration in southern provinces, equivalent to the northern French bailli...
  
   of Ulster
  Ulster
  Ulster is one of the four provinces of Ireland, located in the north of the island. In ancient Ireland, it was one of the fifths ruled by a "king of over-kings" . Following the Norman invasion of Ireland, the ancient kingdoms were shired into a number of counties for administrative and judicial...
  
  

Deaths

• King Muircheartach of Thomond
  Thomond
  Thomond The region of Ireland associated with the name Thomond is County Clare, County Limerick and north County Tipperary; effectively most of north Munster. The name is used by a variety of establishments and organisations located in , or associated with the region...
  
  
• October 26 Conchobhar Mac Diarmada, lord of Moylurg
  Moylurg
  Magh Luirg or Magh Luirg an Dagda, Anglicised as Moylurg, was the name of a kingdom located in the north-east of Connacht, the western province of Ireland, from c.956-1585...
  
  ; succeeded by his brother, Fearghal