Events

• Death of Muirchertach Mac Lochlainn, High King of Ireland
  High King of Ireland
  The High Kings of Ireland were sometimes historical and sometimes legendary figures who had, or who are claimed to have had, lordship over the whole of Ireland. Medieval and early modern Irish literature portrays an almost unbroken sequence of High Kings, ruling from Tara over a hierarchy of...
  
  .
• Ruaidrí Ua Conchobair
  Ruaidrí Ua Conchobair
  Ruaidrí Ua Conchobair , often anglicised Rory O'Connor, reigned as King of Connacht from 1156 to 1186, and from 1166 to 1198 was the last High King before the Norman invasion of Ireland .Ruaidrí was one of over twenty sons of King...
  
   succeeds to the high-kingship, on the death of his father, Tairrdelbach mac Ruaidri Ua Conchobair
  Tairrdelbach mac Ruaidri Ua Conchobair
  Toirdhealbhach Ua Conchobhair , anglicized Turlough Mór O'Connor, was King of Connacht and High King of Ireland .-Family background:...
  
  .
• Dermot MacMurrough
  Dermot MacMurrough
  Diarmait Mac Murchada , anglicized as Dermot MacMurrough or Dermod MacMurrough , was a King of Leinster in Ireland. In 1167, he was deprived of his kingdom by the High King of Ireland - Turlough Mór O'Connor...
  
  , King of Leinster
  Kings of Leinster
  The following is a provisional list of the kings of Leinster who ruled the Irish kingdom of Leinster up to 1632 with the death of Domhnall Spainnach MacMurrough-Kavanagh, the last legitimately inaugurated head of the MacMurrough Kavanagh royal line...
  
  , is driven overseas and seeks the help of Henry II of England
  Henry II of England
  Henry II ruled as King of England , Count of Anjou, Count of Maine, Duke of Normandy, Duke of Aquitaine, Duke of Gascony, Count of Nantes, Lord of Ireland and, at various times, controlled parts of Wales, Scotland and western France. Henry, the great-grandson of William the Conqueror, was the...
  
   and recruits Norman
  Normans
  The Normans were the people who gave their name to Normandy, a region in northern France. They were descended from Norse Viking conquerors of the territory and the native population of Frankish and Gallo-Roman stock...
  
  knights.