The Kingdom of Munster () was a kingdom of
Gaelic Ireland
Gaelic Ireland () was the Gaelic political and social order, and associated culture, that existed in Ireland from the late Prehistory of Ireland, prehistoric era until the 17th century. It comprised the whole island before Anglo-Norman invasi ...
which existed in the south-west of the island from at least the 1st century BC until 1118. According to traditional
Irish history found in the ''
Annals of the Four Masters
The ''Annals of the Kingdom of Ireland'' () or the ''Annals of the Four Masters'' () are chronicles of Middle Ages, medieval Irish history. The entries span from the Genesis flood narrative, Deluge, dated as 2,242 Anno Mundi, years after crea ...
'', the kingdom originated as the territory of the ''
Clanna Dedad'' (sometimes known as the
Dáirine
The Dáirine (Dárine, Dáirfine, Dáirfhine, Dárfine, Dárinne, Dairinne), later known dynastically as the Corcu Loígde and associated, were the proto-historical rulers of Munster before the rise of the Eóganachta in the 7th century AD. They ...
), an
Érainn
The Iverni (, ') were a people of early Ireland first mentioned in Ptolemy's 2nd century ''Geography'' as living in the extreme south-west of the island. He also locates a "city" called Ivernis (, ') in their territory, and observes that this se ...
tribe of Irish
Gaels
The Gaels ( ; ; ; ) are an Insular Celts, Insular Celtic ethnolinguistic group native to Ireland, Scotland, and the Isle of Man. They are associated with the Goidelic languages, Gaelic languages: a branch of the Celtic languages comprising ...
. Some of the early kings were prominent in the
Red Branch Cycle such as
Cú Roí and
Conaire Mór. For a few centuries they were competitors for the
High Kingship of Ireland, but ultimately lost out to the
Connachta, descendants of
Conn Cétchathach. The kingdom had different borders and internal divisions at different times during its history.
Major changes reshaped Munster in the 6th century, as the
Corcu Loígde
The Corcu Loígde (Corcu Lóegde, Corco Luigde, Corca Laoighdhe, Laidhe), meaning Gens of the Calf Goddess, also called the Síl Lugdach meic Itha, were a kingdom centred in West County Cork who descended from the proto-historical rulers of M ...
(ancestors of the ''
Ó hEidirsceoil'') fell from power.
Osraige
Osraige (Old Irish) or Osraighe (Classical Irish), Osraí (Modern Irish), anglicized as Ossory, was a medieval Irish kingdom comprising what is now County Kilkenny and western County Laois, corresponding to the Diocese of Ossory. The home of ...
which had been brought under the control of Munster for two centuries was retaken by the
Dál Birn (ancestors of the ''
Mac Giolla Phádraig''). Various subordinate groups, such as the
Múscraige, switched their alliance and helped to bring the
Eóganachta
The Eóganachta (Modern , ) were an Irish dynasty centred on Rock of Cashel, Cashel which dominated southern Ireland (namely the Kingdom of Munster) from the 6/7th to the 10th centuries, and following that, in a restricted form, the Kingdom of De ...
to power in Munster. For the next three centuries, various subgroups such as the
Eóganacht Chaisil (ancestors of the ''
Ó Súilleabháin'' and ''
Mac Cárthaigh'') and
Eóganacht Glendamnach (ancestors of the ''
Ó Caoimh'') competed for control of Munster.
Celtic Christian civilisation developed at this time and the
Rock of Cashel
The Rock of Cashel ( ), also known as Cashel of the Kings and St. Patrick's Rock, is a historical site located dramatically above a plain at Cashel, County Tipperary, Cashel, County Tipperary, Republic of Ireland, Ireland.
History
According t ...
became a seat of power. Two kings,
Faílbe Flann mac Áedo Duib and
Cathal mac Finguine, were able to raise Munster to the premier Irish kingdom for a time.
Munster had to contend with raids from the
Vikings
Vikings were seafaring people originally from Scandinavia (present-day Denmark, Norway, and Sweden),
who from the late 8th to the late 11th centuries raided, pirated, traded, and settled throughout parts of Europe.Roesdahl, pp. 9� ...
under the
Uí Ímair from the 9th century onwards, who established themselves at
Limerick
Limerick ( ; ) is a city in western Ireland, in County Limerick. It is in the Provinces of Ireland, province of Munster and is in the Mid-West Region, Ireland, Mid-West which comprises part of the Southern Region, Ireland, Southern Region. W ...
,
Waterford
Waterford ( ) is a City status in Ireland, city in County Waterford in the South-East Region, Ireland, south-east of Ireland. It is located within the Provinces of Ireland, province of Munster. The city is situated at the head of Waterford H ...
and
Cork. Around the same time the
Dál gCais (ancestors of the ''
Ó Briain''), previously known as the
Déisi, were also in the ascendancy in Munster. Aided in part by the
Uí Néill, the previously subordinate Dál gCais came to challenge the Eóganachta for control of Munster. The exploits of their most famous member
Brian Bóruma, who is known for the
Battle of Clontarf established Dál gCais rule for the rest of the 11th century. After internal divisions, Munster was partitioned by High King
Toirdelbach Ó Conchobhair with the Treaty of
Glanmire in 1118, between
Thomond ruled by the ''Ó Briain'' and
Desmond ruled by the ''Mac Cárthaigh''.
Etymology
A late medieval text in
Middle Irish
Middle Irish, also called Middle Gaelic (, , ), is the Goidelic language which was spoken in Ireland, most of Scotland and the Isle of Man from AD; it is therefore a contemporary of Late Old English and Early Middle English. The modern Goideli ...
named ''Cóir Anmann'' (known in English as the "Fitness of Names" or the "Elucidation of Names") gives an etymology for the term Munster. It claims that the name partly derives from
Eochaidh Mumu, one of the early
Heberian High Kings of Ireland who ruled the area.
This High King held the
royal nickname ''mó-mó'' meaning "greater-greater", because he was supposed to be more powerful and greater in stature than any other Irishman of his time (the ''
Annals of the Four Masters
The ''Annals of the Kingdom of Ireland'' () or the ''Annals of the Four Masters'' () are chronicles of Middle Ages, medieval Irish history. The entries span from the Genesis flood narrative, Deluge, dated as 2,242 Anno Mundi, years after crea ...
'' claims he reigned from 1449–1428 BC).
The ''Cóir Anmann'' claims that the word ''mó'' (greater) with ''ána'' (prosperity) combined to form ''Mumu'', because the kingdom was more prosperous than any other in Ireland.
The second word ''ána'' is also associated with the goddess
Anu (potentially the same as mother goddess
Danu). Indeed, Munster includes within it a pair of breast shaped mountains near
Killarney
Killarney ( ; , meaning 'church of sloes') is a town in County Kerry, southwestern Republic of Ireland, Ireland. The town is on the northeastern shore of Lough Leane, part of Killarney National Park, and is home to St Mary's Cathedral, Killar ...
named the
Two Paps of Ána.
History
Rise of the Dáirine in Munster
The early Kings of Munster, derived from the
Érainn
The Iverni (, ') were a people of early Ireland first mentioned in Ptolemy's 2nd century ''Geography'' as living in the extreme south-west of the island. He also locates a "city" called Ivernis (, ') in their territory, and observes that this se ...
(one of the major sub-branches of
Gaels
The Gaels ( ; ; ; ) are an Insular Celts, Insular Celtic ethnolinguistic group native to Ireland, Scotland, and the Isle of Man. They are associated with the Goidelic languages, Gaelic languages: a branch of the Celtic languages comprising ...
in Ireland), were mentioned in the
Red Branch Cycle of Irish traditional history. Prominent figures featuring in this Cycle are
Cú Roí mac Dáire,
Conaire Mór,
Lugaid mac Con Roí and others. These men are all presented as great warriors, in particular Cú Roí features in the ''
Táin bó Cúailnge'', where he fights
Amergin mac Eccit, until requested to stop by
Meadhbh. Eventually Cú Roí is killed by
Cú Chulainn after being betrayed by
Bláthnat who he had captured. His death was avenged by his son Lugaid mac Con Roí.

The
Dáirine
The Dáirine (Dárine, Dáirfine, Dáirfhine, Dárfine, Dárinne, Dairinne), later known dynastically as the Corcu Loígde and associated, were the proto-historical rulers of Munster before the rise of the Eóganachta in the 7th century AD. They ...
(named for
Dáire mac Dedad), or ''Clanna Dedad'', a major branch of the Érainn, were a significant power in Gaelic Ireland, providing several
High Kings of Ireland at the
Hill of Tara in addition to ruling Munster. There was also a ''Temair Luachra'' ("Tara of the Rushes"), existing as the
royal site of Munster, but this is lost to history (it is potentially synonymous with
Caherconree). Some of the most prominent High Kings from this time provided by the Érainn of Munster include
Eterscél Mór and
Conaire Mór who are the subject of the ''
Togail Bruidne Dá Derga''. The
Laigin in particular were major rivals for Munster at the time. The
Chronicle of Ireland places the start of these rulers at roughly the 1st century BCE. Outside of Gaelic sources, the predominant people of Munster, the Érainn, along with other tribes in the area are attested to in
Ptolemy
Claudius Ptolemy (; , ; ; – 160s/170s AD) was a Greco-Roman mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine science, Byzant ...
's ''
Geographia'', where they are known as the
Iverni.
According to the ''
Book of Glendalough'', a member of the Munster royal family,
Fíatach Finn, moved north and became
King of Ulster, establishing the Érainn kindred known as the
Dál Fiatach
Dál Fiatach was a Gaelic Ireland, Gaelic dynastic-grouping and the name of their territory in the north-east of Ireland, which lasted throughout the Middle Ages until their demise in the 13th century at the hands of Normans in Ireland, Normans ...
. This meant competing with the
Ulaid
(Old Irish, ) or (Irish language, Modern Irish, ) was a Gaelic Ireland, Gaelic Provinces of Ireland, over-kingdom in north-eastern Ireland during the Middle Ages made up of a confederation of dynastic groups. Alternative names include , which ...
rulers of
Clanna Rudhraighe. A great revival of power for Munster occurred in the 2nd century AD, as one of their kings,
Conaire Cóem, established himself as High King of Ireland. This was a time for pioneering figures, as major High Kings representing other Gaelic groups in Ireland also lived such as
Conn Cétchathach founder of the
Connachta and
Cathair Mór a prominent king of the
Laigin. Conaire Cóem holds an important place in Irish genealogies as the forefather of the
Síl Conairi. His sons; Cairpre Músc (ancestor of the
Múscraige and
Corcu Duibne), Cairpre Baschaín (ancestor of the
Corcu Baiscind) and Cairpre Riata (ancestor of the
Dál Riata
Dál Riata or Dál Riada (also Dalriada) () was a Gaels, Gaelic Monarchy, kingdom that encompassed the Inner Hebrides, western seaboard of Scotland and north-eastern Ireland, on each side of the North Channel (Great Britain and Ireland), North ...
) founded kinship groups which would play a major role in Munster, while the latter moved north to Ulster and eventually established
Alba (better known as
Scotland
Scotland is a Countries of the United Kingdom, country that is part of the United Kingdom. It contains nearly one-third of the United Kingdom's land area, consisting of the northern part of the island of Great Britain and more than 790 adjac ...
) in
Great Britain
Great Britain is an island in the North Atlantic Ocean off the north-west coast of continental Europe, consisting of the countries England, Scotland, and Wales. With an area of , it is the largest of the British Isles, the List of European ...
.
Another High King from Munster's Dáirine around this period was
Lugaid Mac Con, the progenitor of
Corcu Loígde
The Corcu Loígde (Corcu Lóegde, Corco Luigde, Corca Laoighdhe, Laidhe), meaning Gens of the Calf Goddess, also called the Síl Lugdach meic Itha, were a kingdom centred in West County Cork who descended from the proto-historical rulers of M ...
. His mother was
Sadb ingen Chuinn from the Connachta and he was called ''Mac Con'' ("Son of the Hound") because he was supposedly suckled by his foster-father
Ailill Aulom's
greyhound. He ascended to the High Kingship from his Munster base after killing
Art mac Cuinn in the
Battle of Maigh Mucruimhe, which is the subject of a literary tale. His foster-father, Ailill Aulom is claimed to have been a King of Munster and belonged to the
Deirgtine. This group of Gaels were not Dáirine and other Kings of Munster from them mentioned in the
Cycles of the Kings, include
Mug Nuadat,
Éogan Mór and
Fiachu Muillethan. The exact relationship of the Deirgtine to other groups in Munster is controversial, the
Eóganachta
The Eóganachta (Modern , ) were an Irish dynasty centred on Rock of Cashel, Cashel which dominated southern Ireland (namely the Kingdom of Munster) from the 6/7th to the 10th centuries, and following that, in a restricted form, the Kingdom of De ...
later claimed direct descent from them. The Eóganachta emerged in the 4th or 5th century under
Corc mac Luigthig but would take near total power in the early 7th century and the genealogical claim may have been to bolster their legitimacy.
Christianisation of the Realm
The religion of
Christianity
Christianity is an Abrahamic monotheistic religion, which states that Jesus in Christianity, Jesus is the Son of God (Christianity), Son of God and Resurrection of Jesus, rose from the dead after his Crucifixion of Jesus, crucifixion, whose ...
, which after the
Edict of Thessalonica
An edict is a decree or announcement of a law, often associated with monarchies, but it can be under any official authority. Synonyms include "dictum" and "pronouncement". ''Edict'' derives from the Latin wikt:edictum#Latin, edictum.
Notable ed ...
in 380 AD became the
state religion of the
Roman Empire
The Roman Empire ruled the Mediterranean and much of Europe, Western Asia and North Africa. The Roman people, Romans conquered most of this during the Roman Republic, Republic, and it was ruled by emperors following Octavian's assumption of ...
and thus, much of
Europe
Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...
, came to Ireland in the 5th century, largely through Munster and
Leinster. Many of the earliest saints of Ireland mentioned in the ''
Codex Salmanticensis'' had strong Munster connections, particularly St.
Ailbe in
Emly, historical location of the
Mairtine. He supposedly received canonical orders from St.
Palladius who was sent by
Pope Celestine I to Ireland in 431 AD. The first Christian saint born in Ireland itself was St.
Ciarán of Saigir, associated with
Osraige
Osraige (Old Irish) or Osraighe (Classical Irish), Osraí (Modern Irish), anglicized as Ossory, was a medieval Irish kingdom comprising what is now County Kilkenny and western County Laois, corresponding to the Diocese of Ossory. The home of ...
, who had a royal Munster (Corcu Loígde) mother. As well as this St.
Declán of the
Déisi Muman converted his people and established a monastery at
Ardmore.
The conversion of the
Eóganacht Chaisil, who were Kings of Cashel and gaining more and more influence in Munster, to the detriment of the Corcu Loígde, occurred during the reign of
Óengus mac Nad Froích. He was said to have been converted by
St. Patrick in a ceremony in which Patrick is supposed to have accidentally pierced the king's foot with his
crozier
A crozier or crosier (also known as a paterissa, pastoral staff, or bishop's staff) is a stylized staff that is a symbol of the governing office of a bishop or abbot and is carried by high-ranking prelates of Roman Catholic, Eastern Catholi ...
, a pain which Óengus stoically bore, presuming it was part of
baptism
Baptism (from ) is a Christians, Christian sacrament of initiation almost invariably with the use of water. It may be performed by aspersion, sprinkling or affusion, pouring water on the head, or by immersion baptism, immersing in water eit ...
. Indeed, the very finding of
Cashel, which was originally in the land of the
Éile and its establishment as the base of the Eóganachta is attributed in the texts ''
Acallam na Senórach'' and ''
Senchas Fagbála Caisil'' to a miraculous "vision" of St. Patrick, sixty years beforehand by
Corc mac Luigthig. According to the ''Acallam'', Óengus then levied a tri-annual
tribute in Munster known as the "scruple of Patrick’s baptism", showing a clear political interest (this was exacted until the times of St.
Cormac mac Cuilennáin).

Some of the earliest sites of
Irish monasticism are to be found in Munster. St.
Finnian of Clonard founded a monastery at
Skellig Michael off the coast of the
Iveragh Peninsula
The Iveragh Peninsula () is located in County Kerry in Republic of Ireland, Ireland. It is the largest peninsula in southwestern Ireland. A mountain range, the MacGillycuddy's Reeks, lies in the centre of the peninsula. Carrauntoohil, its hig ...
, St.
Senán mac Geirrcinn founded a monastery at
Inis Cathaigh as patron of the Corcu Baiscind and St.
Enda of Aran founded the
Killeaney monastery on
Inishmore, with the support of Óengus mac Nad Froích. These monks often chose isolated and harsh locations for their monasteries, exhibiting an
ascetic spirituality, similar to that of the
Desert Fathers in
Christian Egypt. Elsewhere, monasteries were founded more inland, such as the abbey at
Lismore founded by St.
Mo Chutu and the monastery at what was then known as the ''Corcach Mór na Mumhan'' (now the
City of Cork) founded by St.
Finbarr. The latter institution was particularly associated with learning. Both St.
Brendan of Birr and St.
Brendan of Clonfert came from Munster families, the latter was born in the land of the
Ciarraighe Luachra. A noted female Munster saint of the day, St.
Íte of Killeedy, was known as the "
Brigid of Munster."
Age of the Eóganachta
By the 7th century, the Eóganachta had eclipsed the Corcu Loígde and all others for hegemony in Munster. They were aided in this by their allies, the
Múscraige, who switched sided against their distant Érainn cousins, the Corcu Loígde. In a wider context, in Ireland at the time, the
Uí Néill were firmly establishing themselves as the main power in the country, as the Érainn were in decline, the Laigin limited and the Eóganachta just establishing their hold over Munster. A geopolitical reality, based on the
Leath Cuinn and Leath Moga divisions was then being established. Under
Faílbe Flann mac Áedo Duib, Munster crossed the
River Shannon and defeated the
Ui Fiachrach Aidhne of
Connacht
Connacht or Connaught ( ; or ), is the smallest of the four provinces of Ireland, situated in the west of Ireland. Until the ninth century it consisted of several independent major Gaelic kingdoms (Uí Fiachrach, Uí Briúin, Uí Maine, C ...
, taking from them what would become
Thomond (or in much later times
County Clare
County Clare () is a Counties of Ireland, county in the Provinces of Ireland, province of Munster in the Southern Region, Ireland, Southern part of Republic of Ireland, Ireland, bordered on the west by the Atlantic Ocean. Clare County Council ...
) and settling it with
Déisi. This king of Munster was even able to project power and influence the choice of kings beyond his realm in neighbouring Leinster. With the fall of the Corcu Loígde,
Osraige
Osraige (Old Irish) or Osraighe (Classical Irish), Osraí (Modern Irish), anglicized as Ossory, was a medieval Irish kingdom comprising what is now County Kilkenny and western County Laois, corresponding to the Diocese of Ossory. The home of ...
returned to the ''
Mac Giolla Phádraig'', but remained a ''
túatha'' of Munster until the 9th century.
In regards to the Eóganachta themselves, there were two main branches; the most powerful was the "inner circle", or the eastern-branch, which was further divided into the
Eóganacht Chaisil,
Eóganacht Glendamnach,
Eóganacht Áine and
Eóganacht Airthir Cliach.
The "outer circle" consisted of the
Eóganacht Raithlind and
Eóganacht Locha Léin who were more the west and south. Despite supposedly being descended from a different lineage (that of
Dáire Cerbba
Dáire Cerbba (or Cerba, Cearba, Cearb; meaning "Silver Dáire" or "Dáire the Sharp/Cutting") was a 4th-century Irish dynast who was evidently a king of late prehistoric central northern Munster, called Medón Mairtíne at the time. A frequen ...
), the
Uí Liatháin and
Uí Fidgenti are sometimes lumped in with the latter group. According to the ''Frithfolaid ríg Caisil fri túatha Muman'', only the patrilineal descendants of Nad Froích had the right to be King of Munster.
[ Retrieved on 26 July 2017.]
Indeed, for the most part this would be the case as the Eóganacht Chaisil (ancestors of the ''
Ó Súilleabháin'' and ''
Mac Cárthaigh''), Glendamnach (ancestors of the ''
Ó Caoimh'') and Áine (ancestors of the ''Ó Ciarmhaic'') would provide the overwhelming majority of the kings. Despite the size of their kingdom, Munster was usually substantially weaker than the northern Uí Néill powerhouse; the Eóganachta built up a propaganda that they ruled through "prosperity and generosity", rather than just brute force.
Aside from the aforementioned Faílbe Flann, another exception to this general rule was
Cathal mac Finguine from
Glanworth established himself as a serious contender for the title of High King of Ireland and fought against a succession of three Uí Néill kings for hegemony;
Fergal mac Máele Dúin,
Flaithbertach mac Loingsig and
Áed Allán. He would be the most powerful king from Munster until
Brian Bóruma in the 11th century.
Viking raids and ''longphorts''
The
Vikings
Vikings were seafaring people originally from Scandinavia (present-day Denmark, Norway, and Sweden),
who from the late 8th to the late 11th centuries raided, pirated, traded, and settled throughout parts of Europe.Roesdahl, pp. 9� ...
;
Norsemen
The Norsemen (or Northmen) were a cultural group in the Early Middle Ages, originating among speakers of Old Norse in Scandinavia. During the late eighth century, Scandinavians embarked on a Viking expansion, large-scale expansion in all direc ...
from
Scandinavia
Scandinavia is a subregion#Europe, subregion of northern Europe, with strong historical, cultural, and linguistic ties between its constituent peoples. ''Scandinavia'' most commonly refers to Denmark, Norway, and Sweden. It can sometimes also ...
; began to raid isolated Irish monasteries in their longboats from the late 8th century onwards. Specifically relevant for Munster were the raids at Inish Cathaigh (816 and 835) and Skellig Michael (824).
[ Retrieved on 26 July 2017.] The raiders chose these monasteries primarily because they were isolated and easy to attack from the Sea; they took provisions, precious goods (metalwork especially), livestock and human captives (these people were either ransomed back if they were high-profile clerics or forced into
slavery
Slavery is the ownership of a person as property, especially in regards to their labour. Slavery typically involves compulsory work, with the slave's location of work and residence dictated by the party that holds them in bondage. Enslavemen ...
abroad).
In some cases in Ireland, by the mid-9th century, the Vikings set up coastal encampments known as ''
longphorts''; specifically in relation to Munster, this included;
Waterford
Waterford ( ) is a City status in Ireland, city in County Waterford in the South-East Region, Ireland, south-east of Ireland. It is located within the Provinces of Ireland, province of Munster. The city is situated at the head of Waterford H ...
,
Youghal
Youghal ( ; ) is a seaside resort town in County Cork, Ireland. Located on the estuary of the Munster Blackwater, River Blackwater, the town is a former military and economic centre. Located on the edge of a steep riverbank, the town has a long ...
,
Cork and
Limerick
Limerick ( ; ) is a city in western Ireland, in County Limerick. It is in the Provinces of Ireland, province of Munster and is in the Mid-West Region, Ireland, Mid-West which comprises part of the Southern Region, Ireland, Southern Region. W ...
.
[ Retrieved on 26 July 2017.] After first attacking neighbouring Gaelic Irish kingdoms and receiving retribution in return, the mercantile Vikings began to trade with the native Irish and some even intermarried, they also gradually converted to Christianity and eventually became
Norse-Gaels, exhibiting elements of both cultures.

In Munster itself, a group from among the Vikings; the
Uí Ímair, claiming descent from and named for
Ivar the Boneless, son of
Ragnar Lodbrok; eventually emerged as Kings of small Norse-Gaelic kingdoms where they were
Kings of Limerick and
Kings of Waterford. These small kingdoms; amongst which Limerick was the most prominent; were involved in rivalries with other Vikings in Ireland and held a complex web of rivalries and alliances with native Irish Gaelic clans.
The cultural influence wasn't all one way; some native Irish families in Munster adopted personal names and eventually clan names of
Old Norse
Old Norse, also referred to as Old Nordic or Old Scandinavian, was a stage of development of North Germanic languages, North Germanic dialects before their final divergence into separate Nordic languages. Old Norse was spoken by inhabitants ...
origin. This includes ''
Mac Amhlaoibh'', with ''
Amhlaoibh'' meaning ''
Olaf
Olaf or Olav (, , or differences between General American and Received Pronunciation, British ; ) is a Dutch, Polish, Scandinavian and German given name. It is presumably of Proto-Norse origin, reconstructed as ''*Anu-laibaz'', from ''anu'' "ances ...
''.
A prominent example of a Viking-Gaelic alliance in Munster was when the Waterford Vikings joined with
Cellachán Caisil, a King of Munster from the Eóganacht Chaisil in 939 against
Donnchadh Donn, who was then the High King of Ireland from the southern Uí Néill.
The impact of the Vikings, along with pressure from
Clann Cholmáin (i.e. the Uí Néill, who dominated the High Kingship of Ireland at the time) led to instability within the Munster Kingship and even permanently broke
Osraige
Osraige (Old Irish) or Osraighe (Classical Irish), Osraí (Modern Irish), anglicized as Ossory, was a medieval Irish kingdom comprising what is now County Kilkenny and western County Laois, corresponding to the Diocese of Ossory. The home of ...
from its overkingship. The ascent of elements outside of the main royal families occurred, for instance; St.
Cormac mac Cuilennáin from a very much junior branch of the Eóganacht Chaisil became King of Munster during the early 10th century. Cormac and his right-hand man
Flaithbertach mac Inmainén were able to inflict defeats on High King
Flann Sinna after the latter had ravaged Munster in 906. As well as his martial prowess and religious piety, Cormac was known for his literacy, as his name appears on the ''
Sanas Cormaic'', an
Irish language
Irish (Standard Irish: ), also known as Irish Gaelic or simply Gaelic ( ), is a Celtic language of the Indo-European language family. It is a member of the Goidelic languages of the Insular Celtic sub branch of the family and is indigenous ...
glossary. Cormac finally met his end at the
Battle of Bellaghmoon, where his army was greatly outnumbered. After his severed head was brought to his great rival Flann Sinna, the High King is supposed to have said "It was an evil deed, to cut off the holy bishop's head; I shall honour it, and not crush it." Cormac was succeeded by Flaithbertach who was notably absent from the Battle. He was the only ever King of Munster from the
Múscraige later known as the ''
Ó Donnagáin
Donegan (), most commonly refers to a Gaels, Gaelic Irish people, Irish clan from Munster. The name is diminutive of ''Donn'' which means, "the Dark One", or in modern Irish, "brown", referring to hair colour. The most prominent dynasty were a ...
''.
Division into Desmond and Thomond
The power of the Eóganachta was challenged in the 10th century by the
Dál gCais of Thomond (ancestors of the ''
Ó Briain''). They were assisted in this initially by the Uí Néill who wanted to weaken the Eóganachta. The most successful member of the Dál gCais was
Brian Bóruma, who established himself not only as King of Munster, but also High King of Ireland and is remembered for his feats at the
Battle of Clontarf against the Vikings. After the death of Brian, the Dál gCais dominated the Munster kingship for the duration of the 11th century uninterrupted; from the reign of
Donnchadh Ó Briain until Brian Ó Briain. Two of these kings;
Toirdelbach Ó Briain and
Muirchertach Ó Briain; were also High Kings of Ireland. During the reign of Muirchertach, his grandfather Brian's feats were portrayed in the literary work ''
Cogad Gáedel re Gallaib
''Cogad Gáedel re Gallaib'' ("The War of the Irish with the Foreigners") is a medieval Irish text that tells of the depredations of the Vikings and Uí Ímair dynasty in Ireland and the Irish king Brian Boru's great war against them, begin ...
'' in a proto-
Irish nationalist
Irish nationalism is a nationalist political movement which, in its broadest sense, asserts that the people of Ireland should govern Ireland as a sovereign state. Since the mid-19th century, Irish nationalism has largely taken the form of cult ...
sense as a Gaelic war of liberation against the Viking invaders and their collaborators.
Towards the end of Muirchertach's reign, he fell ill. His brother
Diarmaid Ó Briain who was powerful in Waterford (and had earlier been banished to
Deheubarth in Britain), felt that he would make a better ruler. As well as this strife, all of the kingdoms which had become lesser powers to Munster;
Connacht
Connacht or Connaught ( ; or ), is the smallest of the four provinces of Ireland, situated in the west of Ireland. Until the ninth century it consisted of several independent major Gaelic kingdoms (Uí Fiachrach, Uí Briúin, Uí Maine, C ...
(under the
Ó Conchobhair),
Aileach (under the
Mac Lochlainn) and Leinster (under the
Mac Murchadh); saw this as their opportunity to claw back some power and raise their profile. Their old enemies with whom enmity had remained, the Mac Cárthaigh, under Tadhg Mac Cárthaigh had also reasserted power in the south-west of Munster (which was soon to be known as Desmond). In 1118, the new king of Munster, Brian Ó Briain led a force against Tadhg Mac Cárthaigh at the Battle of
Glanmire. The result was victory for the Mac Cárthaigh and the death of Brian Ó Briain.
Upon hearing the news, the old king, Murichertach Ó Briain returned to claim Munster. However, the High King of Ireland,
Toirdelbach Ó Conchobhair as part of a self-interested move to weaken Munster, agreed in the Treaty of Glanmire in 1118 with Tadhg Mac Cárthaigh to divide Munster in two. Thus, Munster was partitioned into
Thomond (ruled by the Ó Briain) and
Desmond (ruled by the Mac Cárthaigh), putting to an end a kingdom which had existed for over 1,000 years. Until the end of the 12th century, representatives of each side made claims to the Munster kingship but it did not exist in reality. These kingdoms withstood the invasion of the
Normans in Ireland with varying success but eventually in the 16th century were brought under the English Crown in Ireland. The last surviving Munster-derived Gaelic realm was
Carbery under the ''
Mac Cárthaigh Riabhach'', a derivative of Desmond which fell as late as 1606. The name Munster itself was later revived as the
Province of Munster as part of the Tudor-ruled
Kingdom of Ireland
The Kingdom of Ireland (; , ) was a dependent territory of Kingdom of England, England and then of Kingdom of Great Britain, Great Britain from 1542 to the end of 1800. It was ruled by the monarchs of England and then List of British monarchs ...
in the 16th century.
Kingship
See also
*
Annals of Inisfallen
* ''
An Leabhar Muimhneach''
* ''
Leabhar na Núachongbhála''
* ''
Uraicecht Becc''
*
Knockgraffon
References
Bibliography
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External links
Kingdom of Mumha, or Munsterat Aughty
Chief Irish Families of Munsterat Library Ireland
Munsterat Encyclopædia Britannica
Corcu Loígde DNA Projectat
Family Tree DNA
Tribes & Territories of Mumhan
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Kingdoms of medieval Ireland
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Former countries in Ireland
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