'' '''Tír Eoghain''' was a kingdom and later earldom of [[Gaelic Ireland]], comprising parts of present-day [[Contae Thír Eoghain]], [[Contae Ard Mhacha]] agus [[Contae Dhoire]]. The kingdom represented the core homeland of the [[Cenél nEógain|Cineál Eoghain]] people of the [[Uí Néill an Tuaiscirt]]. One part of the realm to the north-east broke away and expanded, becoming [[Clann Aodha Bhuí]], ruled by a scion branch of the [[clann Uí Néill]].
== StaireStair ==
''From the 5ú haois founding of Cenél nEógain, the [[tuath]] was a sub-unit of the larger kingdom of [[Aileach]] (which they typically held the kingship to), along with their [[Cenél Conaill]] cousins, fellow descendants of [[Níall Noígíallach|Niall Naoighiallach]]. The initial ascent of Ailech had coincided with the decline of the [[Ulaid]], whose kingdom receded to the north-east coast.
In theSa 12ú haois, thescaradh kingdomríocht ofAiligh Ailechi splitndá into two sovereignleath, territoriesagus andd'éirigh Cenél nEógain becameina Tír Eoghain. ItBhí wasan ruledtír underréir thecheannas ar dtús [[Mhic Lochlainn]] clanagus andníos thendearanaí under[[Clann their kinsmen the ÓUí Néill clan]]. TheD'éirigh otheran partchuid ofeile Ailechd'Aileach, Cenél Conaill becameCineál knownChonaill asina [[Tír Chonaill]].
Following theRoimh [[Earldomionradh ofna Ulster#DeNormannach]] Courcy.27sar invasionna ofhUlaid Ulaid|Normansa invasion of Ulster]] inbhliain 1177, bhí Tír Eoghain hadan becomeríocht theúd predominantsuntasaí poweri indtuaisceart theÉireann, northagus ofbhain Ireland,sí aan positionstádas itsin regainedamach uponarís thetar collapseéis of the Normanteip [[Iarlacht Uladh]] in thesa 14th14ú centuryhaois. '' During the reign of [[House of Tudor|Tudor]] monarch [[Eilís I]], it would become an earldom within the [[Ríocht na hÉireann]], however the extent and power of TyroneTír Eoghain would be eventually curtailed and it was shired into the counties of Ard Mhacha and TyroneTír Eoghain, and subdivided into baronies.
''During the reign of [[House ofTeach Stuart|Stuart]] monarch [[Séamas I Shasana]], TyroneTír Eoghain would be reduced further with the barony of Loughinsholin in its north-east being transferred to the new county of [[Contae Dhoire]]. The Ó Néill rebelled several times, attempts to reassert sovereignty. The last attempt of substance was under [[Aodh Ó Néill|Aodh Mór Ó Néill]], Iarla TyroneTír Eoghain, who fled in 1607 in what became known as the [[Teitheadh na nIarlaí]].
