Cenél nEóġain is the name of the "kindred" or descendants of Eógan mac Néill , son of Niall Noígiallach

Niall of the Nine Hostages

Niall Noígíallach , or in English, Niall of the Nine Hostages, son of Eochaid Mugmedón, was an Irish king, the eponymous ancestor of the Uí Néill kindred who dominated Ireland from the 6th century to the 10th century...

 who founded the kingdom of Tír Eoghain in the 5th century. It comprises much of what is now County Tyrone

County Tyrone

Historically Tyrone stretched as far north as Lough Foyle, and comprised part of modern day County Londonderry east of the River Foyle. The majority of County Londonderry was carved out of Tyrone between 1610-1620 when that land went to the Guilds of London to set up profit making schemes based on...

, as well as parts of counties Londonderry

County Londonderry

The place name Derry is an anglicisation of the old Irish Daire meaning oak-grove or oak-wood. As with the city, its name is subject to the Derry/Londonderry name dispute, with the form Derry preferred by nationalists and Londonderry preferred by unionists...

, 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...

, Fermanagh

County Fermanagh

Fermanagh District Council is the only one of the 26 district councils in Northern Ireland that contains all of the county it is named after. The district council also contains a small section of County Tyrone in the Dromore and Kilskeery road areas....

, Monaghan

County Monaghan

County Monaghan 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 Monaghan. Monaghan County Council is the local authority for the county...

 and Armagh

County Armagh

-History:Ancient Armagh was the territory of the Ulaid before the fourth century AD. It was ruled by the Red Branch, whose capital was Emain Macha near Armagh. The site, and subsequently the city, were named after the goddess Macha...

.

In 1020 the Cenél nEógain were driven across Sliabh Fuait by the high-king Máel Sechnaill mac Domnaill

Máel Sechnaill mac Domnaill

Máel Sechnaill mac Domnaill , also called Máel Sechnaill Mór, Máel Sechnaill II, anglicized Malachy II, was King of Mide and High King of Ireland...

.

Ancestry

Fergal mac Máele Dúin

Fergal mac Máele Dúin

Fergal mac Máele Dúin was High King of Ireland. Fergal belonged to the Cenél nEógain sept of the northern Uí Néill. He was the son of Máel Dúin mac Máele Fithrich , a King of Ailech, and great grandson of the high king Áed Uaridnach...

|
|___________________
| |
| |
Áed Allán

Áed Allán

Áed Allán was an 8th century Irish king of Ailech and High King of Ireland. Áed Allán was the son of Fergal mac Máele Dúin and a member of the Cenél nEógain, a branch of the Northern Uí Néill....

Niall Frossach

Niall Frossach

Niall Frossach was an 8th century Irish king of Ailech, sometimes considered to have been High King of Ireland. Brother of high king Áed Allán , Niall was the son of high king Fergal mac Máele Dúin and a member of the Cenél nEógain, a branch of the Northern Uí Néill...

| |
| |
Mael Duin Áed Oirdnide

Áed Oirdnide mac Néill

Áed mac Néill , commonly called Áed Oirdnide, was King of Ailech. A member of the Cenél nEógain dynasty of the northern Uí Néill, he was the son of Niall Frossach. Like his father, Áed was reckoned High King of Ireland...

| |
| |____________________________________________
Murchad | |
| |
Niall Caille Mael Duin
| |
__________________|_______________________ |
| | Murchad
| | |
Aed Findliath Flaithbertach |
| | Flaithbertach
|___________________ |
| | Ualgarg
| | |
Domnall Niall Glúndub

Niall Glúndub

Niall Glúndub mac Áedo was a 10th century Irish king of the Cenél nEógain and High King of Ireland. While many Irish kin groups were members of the Uí Néill, tracing their descent from Niall of the Nine Hostages , the O'Neill dynasty took their name from Niall Glúndub rather than the earlier Niall...

| (see below) Aed Ua hUalgairg
|
|__________________________________________________
| | | |
| | | |
Conchobar Fergal Flaithbertach Flann
| | |
| x |
| | Mael Ruanaid
| Murchad Glun re Lar |
| |
| Mael Sechnaill
|________________________ |
| | | |______________
| | | | |
Flaithbertach Tadg Conn | |
Niall Lochlainn
|
____________________|___
| | |
| | |
Domnall Aed Donnchad

Niall Glúndub

Niall Glúndub

Niall Glúndub mac Áedo was a 10th century Irish king of the Cenél nEógain and High King of Ireland. While many Irish kin groups were members of the Uí Néill, tracing their descent from Niall of the Nine Hostages , the O'Neill dynasty took their name from Niall Glúndub rather than the earlier Niall...

|
|_________________________________________________
| |
| |
Muirchertach mac Néill

Muirchertach mac Néill

Muirchertach mac Néill , called Muirchertach of the Leather Cloaks , King of Ailech.-Family ramifications:Muirchertach belonged to the Cenél nEógain sept of the northern Uí Néill...

Conaig
| |
|______________________ |
| | Domnall
| | |
Flaithbertach

Flaithbertach

Flaithbertach is an Irish language male name meaning 'bright ruler'. It is also the origins of the Irish surname Flaithbheartaigh, Anglicised as Laverty and Lafferty in Ulster, and Flaverty and Flaherty in Connacht...

Domnall ua Néill

Domnall ua Néill

Domhnall ua Néill was High King of Ireland from 956 to 980.Domnall was the son of Muirchertach mac Néill, and grandson of Niall Glúndub, a member of the Cenél nEógain northern Uí Néill. He became co-King of Ailech with his brother Flaithbertach on the death of his father in 943...

|
| Fergal
_____________________|_____________________
| |
| |
Muiredach Aed

AED

AED may refer to:* Anhidrotic ectodermal dysplasia, a genetic disorder* Automated external defibrillator, a portable electronic device that diagnoses and can correct arrhythmia of the heart....

Muirchertach
| |
| |
Lochlainn Flaithbertach Ua Néill

Flaithbertach Ua Néill

Flaithbertach Ua Néill was king of Ailech, a kingdom of north-west Ireland. He abdicated in 1030 and undertook a pilgrimage to Rome, for which reason he was known as Flaithbertach an Trostáin...

|
|
Aed

AED

AED may refer to:* Anhidrotic ectodermal dysplasia, a genetic disorder* Automated external defibrillator, a portable electronic device that diagnoses and can correct arrhythmia of the heart....

|
|
Aed In Macaem Toinlesc Ua Neill
|
_______________|______________
| |
| |
Aed Meith Niall Ruad
(issue) (issue)

Kings in italics

Descendents

Descendants of Eógan include

• Clan MacNeil
  Clan MacNeil
  Clan MacNeil, also known in Scotland as Clan Niall, is a highland Scottish clan, particularly associated with the Outer Hebridean island of Barra. The early history of Clan MacNeil is obscure, however despite this the clan claims to descend from the legendary Niall of the nine hostages...
  
  
• Hugh O'Neill;
• Felim O'Neill of Kinard
  Felim O'Neill of Kinard
  Sir Felim O'Neill of Kinard , also called Phelim MacShane O'Neill or Féilim Ó Néill , was an Irish nobleman who led the Irish Rebellion of 1641 in Ulster which began on 22 October 1641. He was a member of the Irish Catholic Confederation during the Wars of the Three Kingdoms, where he fought under...
  
  ;
• Owen Roe O'Neill
  Owen Roe O'Neill
  Eoghan Ruadh Ó Néill , anglicised as Owen Roe O'Neill , was a seventeenth century soldier and one of the most famous of the O'Neill dynasty of Ulster.- In Spanish service :...
  
  ;
• Patrick O'Neill;
• Hugh Dubh O'Neill
  Hugh Dubh O'Neill
  Hugh Dubh O'Neill, 5th Earl of Tyrone was an Irish soldier of the seventeenth century. He is best known for his participation in the Irish Confederate Wars and in particular his defence of Clonmel in 1650.O'Neill was a member of the O'Neill dynasty, the leaders of which fled Ireland in the flight...
  
  ;
• Hugh McShane O'Neill
  Hugh McShane O'Neill
  Hugh "McSeáin" O'Neill genealogies list Hugh as the son of Con MacShane O'Neill, 3rd son of Shane O'Neill and as the 10th son of Shane O'Neill. In both cases he was a grandson of Conn O'Neill, 1st Earl of Tyrone and Gearoid Mór Fitzgerald, 8th Earl of Kildare and of the primary line of the O'Neill...
  
  ;
• Conn O'Neill, 1st Earl of Tyrone
  Conn O'Neill, 1st Earl of Tyrone
  Conn O'Neill, 1st Earl of Tyrone King of Tír Eógain, c. 1480–1559.-Biography:A son of Conn Mór, King of Tír Eógain, grandson of Henry Ó Néill, the King of Tír Eógain, was the first of the Ó Néills whom the attempts of the English in the 16th century to subjugate Ireland brought to the front as...
  
  

Further reading