Former kingdoms in Ireland

historical sovereign state (1801–1922)

kingdom on the island of Ireland between 1542 and 1801

former country (839-1171)

thumb|Ulaid during the 10th–11th century and its three main sub-kingdoms, along with some of its neighbouring kingdoms. These boundaries would be used as the basis for the dioceses created in the 12th century. ' (Old Irish, ) or (Modern Irish, ) was a Gaelic over-kingdom in north-eastern Ireland during the Middle Ages made up of a confederation of dynastic groups. Alternative names include , which is the Latin form of , and ', Irish for 'the Fifth'. The king of Ulaid was called the or .

kingdom in southwest Ireland (1118–1596)

Thomond (Classical Irish: ; Modern Irish: ), also known as the Kingdom of Limerick, was a kingdom of Gaelic Ireland, associated geographically with present-day County Clare as well as parts of County Limerick and County Tipperary, particularly around Nenagh and its hinterland. The kingdom represented the core homeland of the Dál gCais people, although there were other Gaels in the area such as the Éile and Eóganachta, and even the Norse of Limerick. It existed from the collapse of the Kingdom of Munster in the 12th century as competition between the Ó Briain and the Mac Cárthaigh led to the sc

Osraige (Old Irish) or Osraighe (Classical Irish), Osraí (Modern Irish), anglicized as Ossory, was a medieval Irish kingdom comprising what is now County Kilkenny, western County Laois and parts of eastern County Tipperary, corresponding to the Diocese of Ossory. The home of the Osraige people, it existed from around the first century until the Norman invasion of Ireland in the 12th century. It was ruled by the Dál Birn dynasty, whose medieval descendants assumed the surname Mac Giolla Phádraig.

former country

Tyrconnell (), also spelled Tirconnell and Tirconaill, was a kingdom of Gaelic Ireland. It is associated geographically with present-day County Donegal, which was officially named County Tirconaill between 1922 and 1927. At times it also included parts of County Fermanagh, County Sligo, County Leitrim, County Tyrone and County Londonderry at its greatest extent. The kingdom represented the core homeland of the Cenél Conaill people of the Northern Uí Néill and although they ruled, there were smaller groups of other Gaels in the area.

Airgíalla (; Modern Irish: Oirialla, English: Oriel, 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. Airgíalla at its peak roughly matched the modern dioceses of Armagh and Clogher, spanning parts of counties Armagh, Monaghan, Louth, Fermanagh, Tyrone and Londonderry. Its main towns were Armagh and Clogher. The name's usage survives as a cultural area of

ancient Irish kingdom

Gaelic kingdom of ancient and Medieval Ireland