Airgíalla[1] (Modern Irish: Oirialla, English: Oriel,[2] Latin: Ergallia) was a medieval Irish over-kingdom and the collective name for the confederation of tribes that formed it. The confederation consisted of nine minor kingdoms, all independent of each other but paying nominal suzerainty to an overking, usually from the most powerful dynasty.[3] Airgíalla at its peak roughly matched the modern diocesesofArmagh and Clogher, spanning parts of counties Armagh, Monaghan, Louth, Fermanagh, Tyrone and Londonderry.[3] Its main towns were Armagh and Clogher. The name's usage survives as a cultural area of folk tradition in South East Ulster and adjoining areas of County Louth.
Oriel
Airgíalla
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| 331–1585 | |||||||||
Airgíalla and other Irish kingdoms in the 7th–8th century
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| Common languages | Middle Irish, Early Modern Irish, Latin | ||||||||
| Religion |
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| Government | Tanistry | ||||||||
| Rí | |||||||||
• 331–? | Colla Uais | ||||||||
• 1579–1585 | Rossa Buidhe Mac Mathghamhna | ||||||||
| History | |||||||||
• Established | 331 | ||||||||
• Disestablished | 1585 | ||||||||
| ISO 3166 code | IE | ||||||||
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| Today part of |
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According to legend, Airgíalla was founded by the Three Collas,[3] who are said to have conquered what is now central Ulster from the Ulaid. The decisive victory was the battle of Achadh Leithdheirg, said to have been fought around the year 331. However, this tale is thought to be mostly fiction, and the actual year and circumstances of how the Airgíalla confederation came about is unknown.
Originally thought to have been under the dominance of the neighbouring Ulaid to the east, the territory of the Airgíalla from the 6th century onwards was gradually eroded by the encroachment of their northern neighbours, the Cenél nEógain of the Northern Uí Néill,[4] as well as the Southern Uí Néill to their south. From 735 they fell under the dominance of the Cenél nEógain, and by 827 had become their vassals.[4] The kingdom of Airgíalla was at its peak in the 12th century, under king Donnchad Ua Cerbaill. The later constricted kingdom of Airgíalla survived in Monaghan—which was known as Oirghialla and Oriel after the Norman Invasion of Ireland—under the Mac Mathghamhna, until the end of the Gaelic order in Ireland.[3]
Airgíalla, referring to both the Irish over-kingdom of Airgíalla, and the confederation of tribes that formed it, may mean 'those who give hostages' or 'hostage givers',[3][5] presumably in reference to the included territories' vassalage. It is commonly anglicised as Oriel; however, archaic anglicisations include Uriel, Orial, Orgialla, Orgiall, and Oryallia, along with the latinisation Ergallia.[citation needed]
After the Anglo-Norman invasion, the anglicisation Uriel became the name of the part of Airgíalla that had extended into modern-day County Louth.[3] Similarly, the portion of Airgíalla that survived in modern-day County Monaghan, became known as Oirghialla,[3] from which derives the anglicisation Oriel.
In early manuscripts, the Bishop of Clogher was styled "Bishop of Oirialla".
In the beginning of the 4th century, three warlike brothers, known as the Three Collas, made a conquest of a great part of Ulster, which they wrested from the Ulaid. It was the after the battle of Achadh Leithdheirg, fought around 331, that they founded Airgíalla.[6][7] In this battle the forces of the Three Collas defeated the forces of Fergus Foga, king of Ulster, who was slain, and the victors burned to the ground Emain Macha, the ancient capital of Ulaid.
However, in general it can be shown that the origin legend was written (or composed) in the second quarter of the 8th century to seal their alliance with the Northern Uí Néill.[attribution needed]
The earliest reference to the Airgíalla occurs in the Annals of Tigernach under the year 677, where the death of Dunchad mac Ultan, "Rí Oigriall", is noted. However, it is suspected of being a retrospective interpolation. On the other hand, the entry in the Annals of Ulster under the year 697 which lists Mael Fothataig mac Mael Dub as "Rex na nAirgialla" may indeed be genuine. Both Mael Fothatag and his son, Eochu Lemnae (died 704), are listed among the guarantors of the "Cáin Adomnáin" in 697. Thus it is believed that the Airgíalla were probably in existence as an entity by then, or certainly by the opening years of the 8th century.
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The Kingdom of Airgíalla came to an end in 1585 when Rossa Boy MacMahon agreed to surrender and regrant his territories to the English Crown in Ireland, with his territory becoming County Monaghan in the Tudor Kingdom of Ireland. Rossa Buidhe had ascended to the Airgíalla kingship in 1579 and found himself geopolitically in an undesirable position; wedged between an expanding Tudor kingdom and Tír Eoghain under the O'Neill. Initially, Rossa Boy made moves which suggested an alliance with Tír Eoghain, as he married the daughter of Hugh O'Neill, Earl of Tyrone. However, evidently hoping to be left alone to run affairs locally, while pledging allegiance to a distant monarch in Elizabeth I, the MacMahon met with John Perrot, then Lord Deputy of Ireland (according to some, a natural son of Tudor monarch Henry VIII) and agreed to join their Kingdom of Ireland.[8] Airgíalla, now known as Monaghan, was divided into five baronies under native Gaelic chiefs, mostly from the MacMahon themselves.
This was not the end of the matter, however. Fearing the encroachment of the English, moving in closer and closer to his own territories, Hugh O'Neill turned to Brian Mac Hugh Og MacMahonofDartree and married off another daughter to him. Brian Mac Hugh Og was then the tanist to the chieftainship of his people according to the native Brehon laws and O'Neill was hoping to bring the "phantom" Airgíalla realm back into his camp on the death of Rossa Buidhe through this pact. For his part, Ross Buidhe was trying to engineer a pro-English succession through his brother Hugh Roe MacMahon. When the new Lord Deputy, William FitzWilliam began to pressure the acceptance of an English High Sheriff of Monaghan, O'Neill used his influence to exact opposition to it from clansmen in Monaghan (the same policy was promoted in Leitrim, Fermanagh and Donegal to encircle Tyrone). As a consequence, a military force led by Henry Bagenal was sent into the county in early 1589 to impose the sheriff and by the summer of that year, Rossa Boy was dead[how?].
Airgíalla was composed of nine minor-kingdoms, each named after their ruling dynasty. These were:[4]
The Uí Tuirtri, Uí Maic Cairthinn, and Uí Fiachrach Arda Sratha, were collectively known as the Uí Moccu Úais as they claimed descent from Colla Uais.[4] The pedigrees in the Book of Leinster states that Colla Uais had two sons, Erc and Fiachra Tort. From Fiachra Tort came the Uí Tuirtri. From Erc, came Cairthend and Fiachrach, who were respectively the ancestors of the Uí Maic Cairthinn and the Uí Fiachrach Arda Sratha. The Fir Lí are also claimed as being descended from Fiachra Tort, though other sources claim they descend from another son of Colla Uais called Faradach.
The Uí Moccu Uais were also found in counties Meath and Westmeath.[4] They were known as Uí Moccu Uais Midi and Uí Moccu Uais Breg, meaning the Uí Moccu Uais of Meath and Brega, respectively.
