
The Earldom of Ulster was an
Anglo-Norman lordship in north-eastern Ireland during the
Middle Ages
In the history of Europe, the Middle Ages or medieval period lasted approximately from the 5th to the late 15th centuries, similarly to the post-classical period of global history. It began with the fall of the Western Roman Empire and ...
, ruled by the
Earls of Ulster and part of the
Lordship of Ireland
The Lordship of Ireland (), sometimes referred to retrospectively as Anglo-Norman Ireland, was the part of Ireland ruled by the King of England (styled as "Lord of Ireland") and controlled by loyal Anglo-Norman Lords between 1177 and 1542. T ...
. The Norman knight
John de Courcy invaded the
Gaelic Irish
The Gaels ( ; ; ; ) are an Insular Celtic ethnolinguistic group native to Ireland, Scotland, and the Isle of Man. They are associated with the Gaelic languages: a branch of the Celtic languages comprising Irish, Manx, and Scottish Gaeli ...
kingdom of
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 ...
in 1177 and conquered most of its territory over the following few years.
In 1181 he was made
earl
Earl () is a rank of the nobility in the United Kingdom. In modern Britain, an earl is a member of the Peerages in the United Kingdom, peerage, ranking below a marquess and above a viscount. A feminine form of ''earl'' never developed; instead, ...
palatine
A palatine or palatinus (Latin; : ''palatini''; cf. derivative spellings below) is a high-level official attached to imperial or royal courts in Europe since Roman Empire, Roman times. of Ulster by
Henry II of England
Henry II () was King of England
The monarchy of the United Kingdom, commonly referred to as the British monarchy, is the form of government used by the United Kingdom by which a hereditary monarch reigns as the head of state, with the ...
. The earldom was the most important Anglo-Norman lordship in the north of Ireland.
It covered most of what are now the
Ulster
Ulster (; or ; or ''Ulster'') is one of the four traditional or historic provinces of Ireland, Irish provinces. It is made up of nine Counties of Ireland, counties: six of these constitute Northern Ireland (a part of the United Kingdom); t ...
counties of
Antrim and
Down, and briefly extended west to
Lough Foyle
Lough Foyle, sometimes Loch Foyle ( or "loch of the lip"), is the estuary of the River Foyle, on the north coast of Ireland. It lies between County Londonderry in Northern Ireland and County Donegal in the Republic of Ireland. Sovereignty over t ...
.
Its capital was
Carrickfergus Castle.
The Earldom of Ulster suffered heavily from the
Bruce campaign in Ireland in the 1310s, from which it never recovered.
By the 15th century the earldom was restricted to coastal enclaves in County Down and around
Carrickfergus
Carrickfergus ( , meaning " Fergus' rock") is a large town in County Antrim, Northern Ireland. It sits on the north shore of Belfast Lough, from Belfast. The town had a population of 28,141 at the 2021 census. It is County Antrim's oldest t ...
, and the title of Earl of Ulster passed to the Crown in 1461.
De Courcy's invasion of Ulaid

In 1175, after a period of fighting between the
Normans
The Normans (Norman language, Norman: ''Normaunds''; ; ) were a population arising in the medieval Duchy of Normandy from the intermingling between Norsemen, Norse Viking settlers and locals of West Francia. The Norse settlements in West Franc ...
and Irish, the Irish High King,
Rory O'Conor sued for peace with
King Henry II of England who agreed to a status quo allowing the Normans to consolidate their conquests in return for no more incursions into Gaelic territory.
Henry's Norman vassals however remained restless. In 1176,
John de Courcy came to Ireland and, around the start of 1177, went about carefully planning an invasion of
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 ...
in eastern
Ulster
Ulster (; or ; or ''Ulster'') is one of the four traditional or historic provinces of Ireland, Irish provinces. It is made up of nine Counties of Ireland, counties: six of these constitute Northern Ireland (a part of the United Kingdom); t ...
.
Having acquired the approval of the royal governor in
Dublin
Dublin is the capital and largest city of Republic of Ireland, Ireland. Situated on Dublin Bay at the mouth of the River Liffey, it is in the Provinces of Ireland, province of Leinster, and is bordered on the south by the Dublin Mountains, pa ...
, de Courcy took 32 mailed horsemen and some 300-foot soldiers north into
Meath, where he had obtained the right of passage through from its lord, de Lacy.
He then met up with Irish allies who helped provide men and information for the invasion.
De Courcy's force then advanced beyond the northern extent of Norman control and into Ulaid, reaching the petty-kingdom of
Lecale having only set out from Dublin four days before.
Until this, Ulaid had been untouched by "English" forces.
De Courcy's force advanced on
Downpatrick
Downpatrick () is a town in County Down, Northern Ireland. It is on the Lecale peninsula, about south of Belfast. In the Middle Ages, it was the capital of the Dál Fiatach, the main ruling dynasty of Ulaid. Down Cathedral, Its cathedral is sai ...
, the chief seat of 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 ...
dynasty who then ruled Ulaid.
Despite the small size of his force, de Courcy's attack caught the Ulaid by surprise forcing the over-king of Ulaid,
Rory MacDonleavy (''Ruaidrí Mac Duinn Sléibe'') to flee.
The papal legate, Cardinal Vivian, had been on a visit to Ulster when this attack happened and he called for the withdrawal of de Courcy's forces, however this went unheeded.
About a week later, MacDunleavy returned to
Downpatrick
Downpatrick () is a town in County Down, Northern Ireland. It is on the Lecale peninsula, about south of Belfast. In the Middle Ages, it was the capital of the Dál Fiatach, the main ruling dynasty of Ulaid. Down Cathedral, Its cathedral is sai ...
with a great host drawn from across
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 ...
, however despite being vastly outnumbered, de Courcy's forces won the day.
MacDonleavy followed up this attack with an even greater force made up a coalition of Ulster's powers that included the king of the
Cenél nEógain,
Máel Sechnaill Mac Lochlainn, and the chief prelates in the province.
Again the Normans emerged victorious, even capturing the clergy involved included the
Archbishop of Armagh
The Archbishop of Armagh is an Episcopal polity, archiepiscopal title which takes its name from the Episcopal see, see city of Armagh in Northern Ireland. Since the Reformation in Ireland, Reformation, there have been parallel apostolic success ...
, the
Bishop of Down, and many of their relics.
Despite forming alliances, constant inter-warring amongst the Ulaid and against their Irish neighbours continued oblivious to the threat of the Normans.
De Courcy would take advantage of this instability and from his base in Downpatrick set about conquering the neighbouring districts in Ulaid.
Expansion
Over the following year de Courcy, overly eager to extend his conquests, suffered several setbacks as the Irish managed to gain some victories.
In one instance the Normans suffered a heavy defeat against the combined forces of MacDonleavy and Murrough O'Carroll of
Airgíalla, which was soon followed up by another defeat further north at the hands of the Uí Thuirtri and Fír Lí,
the aftermath of which saw the Normans having to fight their way some 30 miles back to de Courcy's castle on foot, outnumbered and constantly harried by the Irish.
Not all of Ulaid had fallen to de Courcy, the kingdom of
Uíbh Eachach Cobha that was situated in central and western
County Down
County Down () is one of the six counties of Northern Ireland, one of the nine counties of Ulster and one of the traditional thirty-two counties of Ireland. It covers an area of and has a population of 552,261. It borders County Antrim to the ...
, escaped conquest as did small areas here and there.
The Normans rode through Eachach Coba (English:
Iveagh
Iveagh ( ; ) is the name of several historical territorial divisions in what is now County Down, Northern Ireland. Originally it was a Gaelic Irish territory, ruled by the ''Uí Echach Cobo'' and part of the overkingdom of Ulaid. From the 12th ...
) on their way from Dublin to Downpatrick, and the nature of their surprise attack suggests that the Eachach Coba had given support to, or at least assented to, de Courcy's plan. Subsequently, the
Magennis
Magennis (), also spelled Maguiness or McGuinness, is an Irish surname, meaning the "son of Angus", which in eastern Ulster was commonly pronounced in Irish as ''Mag''/''Mac Aonghusa''. A prominent branch of the '' Uíbh Eachach Cobha'', the Ma ...
clan that ruled Eachach Coba profited from trading with the Earldom of Ulster, and following its collapse in 1333 took over some of its lands to the east, and rebuilt
Magennis Castle.
MacDonleavy continued to provide resistance to de Courcy, however Ulaid had been lost, and with it the balance of power in Ulster shifted.
The success of de Courcy's invasion and ability to withstand the counter-attacks despite facing overwhelming odds is attributed to the military and technological superiority the Normans held in comparison to the Irish.
Consolidation
Throughout his domain, de Courcy built motte castles to establish a presence and stand guard at importance approaches.
At least 128 mottes have been discovered in Ulster, the majority of which can be found in the area of greatest Norman presence; south County Antrim and north County Down.
The mightiest castle that de Courcy would build was
Carrickfergus Castle, which would eventually become his administrative center. He also built the castle of Rath, now known as
Dundrum Castle, which stood guard over Lecale.
All of the conquests made by de Courcy had quick and easy access to the sea, which provided a vital lifeline for him and his forces when needed.
In 1180, de Courcy married
Affrica, the daughter of the
Guðrøðr Óláfsson, King of the Isles, which allowed him to call upon a strong fleet further reinforcing his position.
Despite the initial opposition to the Normans, the Ulaid eventually seem to come to terms with their situation and even seek aid in resisting the increasing number of raids and attacks from the
Northern Uí Néill
The Northern Uí Néill was any of several dynasties in north-western medieval Ireland that claimed descent from a common ancestor, Niall of the Nine Hostages. Other dynasties in central and eastern Ireland who also claimed descent from Niall ar ...
.
An example of which is in 1182, when an alliance between de Courcy and the Ulaid saw the defeat of an incursion by the ''Ó Doibhilin'' (Devlin) sept of the Northern Uí Néill.
According to the Annals of the Four Masters:
*In 1182, Domhnall mac Aodha Mac Lochlainn of the Northern Uí Néill, took an army to Dunboe in
Fir na Craoibhe (eastern County Londonderry) to fight the Foreigners, however they were defeated with many Gaelic nobles killed.
Having committed crimes against the Church and its servants in his conquest of Ulaid, de Courcy set about making amends by granting land to the Church and establishing abbeys. He renamed Dun-da-lethglas Downpatrick after
Saint Patrick, and granted it to the Church, and had the alleged remains of saints Patrick,
Brigid
Brigid or Brigit ( , ; meaning 'exalted one'),Campbell, MikBehind the Name.See also Xavier Delamarre, ''brigantion / brigant-'', in ''Dictionnaire de la langue gauloise'' (Éditions Errance, 2003) pp. 87–88: "Le nom de la sainte irlandaise ''B ...
, and
Colmcille, transferred there.
For a quarter of a century, de Courcy ruled his domain like an independent king, styling himself ''princeps Ultoniae'', "master of Ulster".
He administered his own justice and even minted his own halfpennies and farthings.
He was also described as "prince of the Ulster people" and in his arrest-warrant, was called by
John, King of England
John (24 December 1166 – 19 October 1216) was King of England from 1199 until his death in 1216. He lost the Duchy of Normandy and most of his other French lands to King Philip II of France, resulting in the collapse of the Angevin Empi ...
, "King of all the barons of Ulster".
Incursions against the Northern Uí Néill
In 1197 John De Courcy's brother, Jordan, was killed by one of his Irish attendants and as revenge John attacked various Irish
petty-kings. In this he was aided by
Duncan, Earl of Carrick, who was the cousin of his wife
Affreca.
John led his army across the River Bann at ''Eas Craoibhe'' (the Salmon Leap, in modern-day
Coleraine
Coleraine ( ; from , 'nook of the ferns'Flanaghan, Deirdre & Laurence; ''Irish Place Names'', page 194. Gill & Macmillan, 2002. ) is a town and Civil parishes in Ireland, civil parish near the mouth of the River Bann in County Londonderry, No ...
, County Londonderry), in Fir na Craoibhe, where they founded the castle of Kilsanctan.
They then laid waste to the neighbouring territory of ''
Cianachta''.
From the castle in Kilsanctan, Rotsel Piton (Peyton), who had been left in charge of a large force, set forth to plunder the surrounding territories and churches, going as far as the harbour at Derry.
The Northern Uí Néill king,
Flaithbertach Ó Mael Doraidh (Flaherty O'Muldory) of the
Cenél Conaill
Cenél is a surname. Notable people with the surname include:
*Cenél Conaill, the name of the "kindred" or descendants of Conall Gulban, son of Niall Noígiallach defined by oral and recorded history
*Cenél nEógain (in English, Cenel Eogan) is ...
, took a force and engaged Piton on the strand at
Faughanvale resulting in a slaughter of the English as well as the death of a son of
Ardgal Mac Lachlainn—of the ruling dynasty of the Cenél nEógain, rivals of the Cenél Conaill—who was on the side of the English.
As reward for his help, Duncan was rewarded a sizeable portion of the territory subjugated from the Irish,
stated as being along the northern coastline of present-day counties Antrim and Londonderry.
From the death of
Muirchertach Mac Lochlainn (Murtough Mac Loughlin), king of the Cenél nEógain, over-king of the Northern Uí Néill, as well as
High King of Ireland
High King of Ireland ( ) was a royal title in Gaelic Ireland held by those who had, or who are claimed to have had, lordship over all of Ireland. The title was held by historical kings and was later sometimes assigned anachronously or to leg ...
, in 1166, the Northern Uí Néill had been ruled by Flaithbertach Ó Mael Doraidh of the Cenél Conaill.
During the same time the Cenél nEógain had had eight kings all of which had died violently, either in conflict with the Cenél Conaill or amongst themselves.
Adding to the mix was the ascendancy of the
Uí Neill (O'Neill) sept to the kingship of Cenél nEógain in place of the Mac Lachlainn's.
Upon the death of Flaithbertach Ó Mael Doraidh in 1197, Echmarcach Ua Dochartaigh (O'Doherty) of the Cenél Conaill ascended to the kingship of the Cenél Conaill and Northern Uí Néill.
With the death of Ó Mael Doraidh, de Courcy launched an expedition to Derry and camped there for five nights.
Ua Dochartaigh attacked him however he was killed and his force defeated enabling de Courcy to plunder all the cattle of
Inishowen.
Two years later in 1199, de Courcy returned to Derry and plundered the surrounding countryside for a considerable amount of time until
Aedh O'Neill of the Cenél nEógain led a counter-attack by sea at Larne in de Courcy's own territory.
In 1200 and 1204 de Courcy launched raids into the Cenél nEógain's territory, Tír Eoghain, however these were futile, the last battle of which was led by Dermot Mac Lachlainn, who was killed. It seems pretty evident that de Courcy was aiding the Mac Lachlainn's in their claim to the kingship of Cenél nEógain and as such received their aid in attacking their principle rivals and enemies, the Uí Neill's and Cenél Conaill.
De Lacy take-over
The De Burgh era (1263-1363)
In 1263,
Walter de Burgh was granted the Earldom.

The age of the de Burghs was a relatively peaceful and prosperous time for the Earldom of Ulster, the peace only ending with a siege of Carrickfergus Castle by Edward Bruce in 1315. The Earls of Ulster owned an extensive estate and were responsible for justice in their earldom. Feasting, entertainment, and hunting were all common during this time. Earl
Richard de Burghs’ children married into the most important families in England, Scotland, and the Lordship of Ireland:
Robert Bruce, King of Scots and the Earls of Gloucester, Kildare, Desmond and Louth were his sons-in-law. Carrickfergus was a centre of trade and commerce, drawing merchants from all across Western Europe.
Decline
See also
*
Earl of Ulster
*
Hugh de Lacy, 1st Earl of Ulster
*
Walter de Burgh, 1st Earl of Ulster
*
House of Burgh
The House of Burgh (; ; ), also known by the family names of Burke and Bourke (), is an Ireland, Irish family, descending from the Anglo-Normans, Anglo-Norman de Burgh dynasty, who played a prominent role in the Anglo-Norman invasion of Irel ...
*
Carrickfergus
Carrickfergus ( , meaning " Fergus' rock") is a large town in County Antrim, Northern Ireland. It sits on the north shore of Belfast Lough, from Belfast. The town had a population of 28,141 at the 2021 census. It is County Antrim's oldest t ...
*
Lecale
*
Twescard
Bibliography
*
*
*
*
References
{{DEFAULTSORT:Ulster
Ulaid
De Lacy family
House of Burgh