Coirpre mac Néill

Coirpre mac Néill (fl. c. 485–493), also Cairbre or Cairpre, was said to be a son of Niall of the Nine Hostages. Coirpre was perhaps the leader of the conquests that established the southern Uí Néill in the midlands of Ireland. The record of the Irish annals suggests that Coirpre's successes were reattributed to Muirchertach Macc Ercae. Coirpre is portrayed as an enemy of Saint Patrick in Bishop Tirechán's hagiography and his descendants are said to have been cursed by Patrick so that none would be High King of Ireland. Coirpre is excluded from most lists of High Kings, but included in the earliest.

In later times Coirpre's descendants, the Cenél Coirpri, ruled over three small kingdoms—Cairbre Drom Cliabh in north County Sligo, an area in modern County Longford and at the headwaters of the River Boyne—which may be the remains of a once much larger kingdom stretching 100 miles (160 kilometres) from Donegal Bay to the Boyne.