Éire
Ireland
Four provinces, thirty-two counties, and a diaspora that outnumbers the island by ten to one. The land of the túatha and the chieftains, of the Plantations and the Famine emigrations, where the family name is half the inheritance.
- Families
- 56
- Counties
- 32
- Provinces
- 4
Four provinces, thirty-two counties.
Tap a region of the map to see who held it.
Step Into History
Walk these places on foot
Photoreal walks through time — stand in the streets, halls and castles your family knew, and look all the way around.
Step Into History · New
The MacDonnell stronghold on its Antrim sea-stack, whole and inhabited — Clan Donald astride the North Channel.
Step Into History · New
Georgian Dublin in the year of Rocque's great map — College Green, the Liberties' weavers, the Liffey quays and Christ Church.
Step Into History · New
The MacCarthy lords' great tower-house in its prime — the battlements and the famous stone, high over wooded Muskerry.
Step Into History · New
The O'Brien Earls of Thomond's great four-towered tower-house, hung with banners and famed for its feasts.
Step Into History · New
The walled City of the Tribes at its Spanish-trade height — the quays, Lynch's Castle, and the fourteen merchant families.
Step Into History · New
The cathedral citadel of the Kings of Munster, whole and roofed on its rock — round tower, Cormac's Chapel and Gothic cathedral.
Primer
How Irish surnames work
Ireland was the first European country to use hereditary surnames. By the early eleventh century the great Gaelic dynasties were already passing surnames down, from grandfather, in the older Ó form, or from father, in the Mac form. Ó Néillmeans ‘descendant of Niall’, Niall Glúndubh, king of Tara, killed in 919. Mac Cárthaighmeans ‘son of Cárthach’, Cárthach son of Saerbrethach, king of Eóganacht Caisil, who died around 1045. The surnames froze on the men who carried them at that moment, and every descendant has worn the same name since.
The Anglo-Normans arrived in 1169 and brought a parallel tradition. Fitz, from fils, ‘son of’ in Norman French, produced Fitzgerald, Fitzpatrick, Fitzgibbon. The de Burgo line became Burke; le Waleys became Walsh; de Brún became Browne. Within four generations the great Norman families were speaking Irish, marrying into the Gaelic houses, and being addressed as ‘Mac William Burke’, half Irish surname, half Norman one.
The Plantations of the sixteenth and seventeenth centuries brought a third layer. Lowland Scots into Ulster after 1610. Cromwellian veterans into the midlands and Munster after 1652. The Williamite confiscations of 1691. Surnames like Hamilton, Stewart, Johnston, Wilson sit on Ulster ground today as long as the McCanns and the Maguires.
The Penal Laws of 1695–1829 set out, among many other things, to dismantle the public Catholic and Gaelic identity of the Irish, and the Ó and Mac prefixes became a quiet liability for any family doing business under the Protestant Ascendancy. Across the eighteenth century an enormous proportion of Irish families set the prefixes aside: Ó Súilleabháin became simply Sullivan, Mac Cárthaigh became Carthy, Ó Briain became Brien. The prefixes were not lost; they were put down. The Gaelic Revival of the 1880s and 1890s picked them back up: Douglas Hyde and the Gaelic League made the Ó and the Mac respectable in print again at the same moment the Land League made the Catholic Irish farmer respectable in politics. By 1900 the prefixes were coming back into ordinary use; by 1922 a generation of schoolchildren in the new Free State were writing them as a matter of course.
Then the diaspora. The Famine emigration of 1845–1852 took a million Irish to North America in seven years; the same number again over the half-century that followed. By 1900 there were five times more Irish people overseas than at home. The names travelled with them, but the receiving registries, clerks at Liverpool, at Castle Garden and Ellis Island, at Sydney's Circular Quay , wrote what their typewriters and their ears could manage. The fada over the Ó became an apostrophe; the apostrophe was very often dropped entirely; Mac was simplified to Mc; the more elaborate Gaelic spellings were Anglicised under the same daily assimilative pressures that operated in the schoolyard and the workplace. The diaspora forms, O'Brien, O'Connor, O'Sullivan, McCarthy, are the survivors of that process. The names that came through are the proof of how hard they were held on to.
Browse
By province
Ulster
9 countiesThe northern province, nine counties, six within Northern Ireland, three in the Republic. Land of the Ó Néills, the Ó Domhnaills, and the Plantation that re-shaped the north after 1610.
Leinster
12 countiesThe eastern province, twelve counties from Donegal Bay's southern shore round to Wexford. The Pale, Dublin, the seat of the Lordship of Ireland, and the Norse-and-Norman foundations on the east coast.
Munster
6 countiesThe southern province, six counties from the Aran archipelago east to Waterford. The kingdom of the Eóganachta, of Brian Boru's Dál Cais, and of the great Geraldine houses, Desmond and Kildare, that carried Norman ground into the Gaelic order.
Connacht
5 countiesThe western province, five counties beyond the Shannon. Land of the Ó Conchobhair high kings, the Ó Flaithbheartaigh of Iar Connacht, and the great mediaeval lordships of Galway and Mayo.
Standard-bearers
Names you may know
O'Neill
“Lámh Dhearg Éireann”
The royal house of Tír Eoghain, Hugh O'Neill's earldom and the Flight of the Earls.
Murphy
“Fortis et hospitalis”
The most common surname in Ireland, three independent dynasties, all 'sea warrior'.
Kennedy
“Avise la fin”
Of Ormond and the Dál Cais, Brian Boru's nephews.
Byrne
“Certavi et vici”
Of the Wicklow Mountains, the unconquered lordship at the back of the Pale.
Kelly
“Turris fortis mihi Deus”
Second most common Irish surname, the Uí Maine of Galway, and six other dynasties besides.
Ryan
“Malo mori quam foedari”
Of Owney and Aherlow, the densest Tipperary surname.
FitzGerald
“Crom Abú”
Hibernis ipsis Hiberniores, the Geraldines of Kildare and Desmond.
Burke
“Ung roy, ung foy, ung loy”
The de Burgo Lords of Connacht, Hibernis ipsis Hiberniores.
Walsh
“Transfixus sed non mortuus”
The fourth most common Irish surname, the families the Irish called 'the Welsh'.
Frequently asked
How many Irish families are catalogued on Clan Rising?
How many provinces does Ireland have on the atlas?
What are some of the most famous Irish surnames?
Which Irish families hold the largest historical territory?
Which surnames cross the border into Ireland?
What is the difference between Ó and Mac in Irish surnames?
Why were the Ó and Mac prefixes dropped and then restored?
Which Irish surnames are of Anglo-Norman origin?
Why do Irish surnames have so many spelling variants overseas?
What are the four provinces of Ireland?
Stories
Stories of Ireland
Clontarf
1014O'Brien
In April 1014 Brian Bóramha, called Brian Boru, high king of Ireland, was seventy-three years old and twelve years into a reign that had unified Ireland under a single hand for the first time in its recorded history. The kingdoms of Leinster and Norse Dublin rose against him, summoning Hebridean and Manx and Orcadian Norse to their aid. Brian's army marched up from the south and met them on the strand at Clontarf, north of the Liffey. The battle was fought on Good Friday, the twenty-third of April. By Christian custom Brian himself could not bear arms on the day. He watched from his tent on a low hill above the field. The dynasty he founded would rule Thomond for the next six hundred years. The high kingship he had won by force did not survive him by twelve hours.
The Blarney Stone
c. 1446McCarthy
The legend of the Blarney Stone, that a kiss bestows the gift of fluent and persuasive speech, is a global tourist anchor that draws four hundred thousand visitors a year up the parapet of Blarney Castle in County Cork. The kissing tradition is no older than the 1820s. What is genuinely sixteenth-century, and what is genuinely owed to a McCarthy, is the underlying English word blarney itself: plausible verbal evasion. Cormac Teige McCarthy, lord of Muskerry under Elizabeth I, was repeatedly summoned by the Tudor administration to submit formally to the crown. He played the diplomatic correspondence as no one in Tudor Ireland played it before or after, an extended decade of courteous letters of intent, missed deadlines, plausible delays. Elizabeth, by tradition, gave him the word.
The hanging of Walter Lynch
1493Lynch
By the Galway tradition set down in print in 1820 by James Hardiman, in the year of our Lord fourteen hundred and ninety-three the Mayor of Galway, James Lynch FitzStephen, hanged his own son Walter from the upper window of his own house in Lombard Street, having sentenced him personally for the murder of a Spanish guest. The city's executioner refused to attend; the gathered crowd would not let any other man approach the gallows. Lynch did the work himself. The window, Lynch's Window, is still marked in the building, with a stone tablet bearing a crow-and-skull motif and the Latin inscription Remember death. Whether the English word lynch descends from this Galway hanging is etymologically contested. The story itself is one of the most compactly affecting in the city's chronicle.
Silken Thomas
1534FitzGerald
On the eleventh of June 1534, Thomas FitzGerald, twenty-one years old and deputy-governor of Ireland in his father's absence in London, rode into the council chamber at St Mary's Abbey in Dublin with a hundred and forty horsemen of his Kildare retainers, threw the Sword of State on the table, and renounced his allegiance to Henry VIII. He had heard a false rumour that his father had been executed in the Tower. The Geraldines of Kildare had been the effective government of Ireland for almost a century. The renunciation was, by the lights of any participant in the room, a more serious thing than a Continental noble's defiance: it was the largest private army in Ireland declaring against the king. The campaign that followed cost him his life and the dynasty its earldom.
Brian Mac Giolla Phádraig takes the peerage of Upper Ossory
1541Fitzpatrick
On Wednesday the eleventh of June 1541, in the Council Chamber of Dublin Castle, the senior Gaelic chief Brian Mac Giolla Phádraig of Ossory, in his early forties, the last reigning king of the small but ancient Leinster sub-kingdom of Osraighe (Ossory) between the Slieve Bloom Mountains and the Suir in modern County Laois and County Kilkenny, knelt before the Lord Deputy of Ireland Sir Anthony St Leger and made the formal surrender of his Gaelic-Irish royal-lordship of the Ossory territory under the new Tudor policy of surrender-and-regrant proposed by Henry VIII. He received back in the same ceremony the surrendered lands in formal Crown grant as the new English-style title Baron of Upper Ossory, the first Gaelic-Irish chief in the history of the Tudor English administration to accept the surrender-and-regrant arrangement, and on the strength of the surrender adopted the new English-style surname Fitzpatrick (the Mac of his original Gaelic patronymic Mac Giolla Phádraig translated into the Norman Fitz, with the Phádraig component retained), the unique single example in the surname-history of Ireland of a Gaelic Mac translated into a Norman Fitz. The surrender-and-regrant of 1541 was the foundational Tudor administrative-and-political instrument by which the Gaelic-Irish lordships were brought into the Crown peerage-and-tenure system across the next forty years of the Henrician-and-Elizabethan Tudor settlement, and the Mac Giolla Phádraig acceptance was the central single test-case on which the policy was demonstrated to be administratively viable.
Red Hugh's escape from Dublin Castle
1591O'Donnell
Aodh Ruadh Ó Domhnaill, Red Hugh O'Donnell, was kidnapped at fifteen by agents of the Tudor administration off Rathmullan in Donegal in 1587. He was held in Dublin Castle as a hostage to keep his father quiet, the system of taking teenage heirs from the great Gaelic families as pupils of crown justice being systematic policy in those years. He escaped once in January 1591 and was recaptured. He escaped again on Christmas night the same year, eighteen years old, by descending into the castle's privy and walking out through the sewer. The walk through a December blizzard up into the Wicklow Mountains cost him his fellow escapee Art O'Neill, frozen to death in the snow, and his own two big toes to frostbite. He went home to Donegal a fortnight later and within two years was leading half the Nine Years War.
Hugh the Hospitable at Coll's Crossroads
1600Maguire
On the morning of the first of March 1600, on a bog-crossing at Coll's Crossroads near Mallow in north County Cork, Hugh the Hospitable Maguire, then about thirty-five years old, the chief of Fermanagh and the Maguire warrior of the Nine Years' War, met in single combat the English Marshal of Munster Sir Warham St Leger and killed him with a horse-pistol-shot to the chest. St Leger, in the same exchange, hit Maguire with a pistol-shot to the head; both men were dead within minutes. Maguire had been on a twelve-hundred-mile cavalry-raid from the Fermanagh lake-country south through Roscommon, Tipperary and Limerick to engage the English Munster garrison-force in the rear of Sir George Carew's Munster campaign of the spring of 1600. The Coll's Crossroads action was the furthest-south military penetration by the Ulster confederacy in the whole of the Nine Years' War (1593–1603); the Maguire-St-Leger mutual kill is, by every careful judgment of Irish-historiography of the period (Hiram Morgan, John McGurk), the most-romanticised single-combat death of the Tudor wars in Ireland.
Donal Cam's march
1602–1603O'Sullivan
On the last day of December 1602 a thousand O'Sullivans, men, women and children, set out from the burnt country of Beara on the south-west tip of Munster to walk to safety in Leitrim, two hundred and fifteen Irish miles north, through country garrisoned by their enemies, in midwinter. Their leader was Donal Cam O'Sullivan Beare, the last Gaelic lord of the peninsula, whose strongholds had been taken one by one through the year and whose cattle had been driven off and whose harbour had been blockaded. The walk took fifteen days. Thirty-five reached the gates of Leitrim Castle. The march itself, recorded in detail in the Historiae Catholicae Iberniae Compendium of 1621, is one of the most affecting episodes of seventeenth-century Europe.
The Flight of the Earls
1607O'Neill
On the evening of the fourteenth of September 1607, two of the great Gaelic earls of Ulster, Hugh O'Neill of Tyrone and Rory O'Donnell of Tyrconnell, with ninety of their kinsmen, household, scholars, monks, wives and children, boarded a French ship lying at anchor in the deep water of Lough Swilly off Rathmullan in Donegal. The ship sailed on the morning tide. None of them ever saw Ireland again. The Plantation of Ulster, the systematic settlement of the surrendered counties by Lowland Scots and English Protestant tenants, began on the back of the forfeitures three years later. The Flight of the Earls is the date the Irish historians take as the end of the political existence of Gaelic Ireland.
Cahir O'Doherty burns Derry
1608Doherty
On the morning of Tuesday the nineteenth of April 1608, in the small wooden-and-thatch Plantation town of Derry on the west bank of the lower Foyle, Sir Cahir Rua Ó Dochartaigh, twenty years old, the last Gaelic lord of Inishowen and one of the few O'Donnell-affiliated Gaelic chiefs the Mountjoy administration had retained on its estates after the Flight of the Earls of September 1607, rose without warning in personal revolt against the English Governor of Derry, Sir George Paulet, who four months earlier had publicly insulted him and struck him in the face at the Governor's House. Cahir took the small Culmore Fort at the mouth of the Foyle in a dawn assault on the eighteenth of April; marched the seventy Doherty fighting men on Derry through the early hours of the nineteenth; took the unwalled town in a single charge; killed Paulet personally; and burnt the town and its three hundred Plantation houses to the ground in a single night. He held Inishowen and the lower Foyle country against the response from Dublin Castle for the next ten weeks. He was killed at Kilmacrenan in north-east Donegal on the fifth of July 1608, shot in the head at close range by a single musket-ball in a small cavalry skirmish on the steep ground above the Glashagh river; his head was severed by the English captain who took the field, was sent down to Dublin, and was spiked over the Castle gate. His lands were attainted within three months. The Plantation of Ulster, formally proposed at Whitehall in October 1608 on the strength of the forfeitures, was implemented from 1610 across the six confiscated Ulster counties. The pattern of Ulster history for the next four centuries was set in significant part by the twenty-year-old O'Doherty's furious response to a personal insult on the Foyle.
Robert Boyle and The Sceptical Chymist
1661Boyle
In the spring of 1661, in the laboratory Robert Boyle had built behind the house of his sister Lady Ranelagh at Pall Mall in central London, Boyle, thirty-four years old, the seventh son of the Great Earl of Cork (Richard Boyle, the Anglo-Irish planter who had been the wealthiest man in Ireland at his 1643 death), former resident-experimenter at Oxford 1656–58 under the Cromwell government, founding member of the Royal Society (chartered in 1662, but operative as the Invisible College since 1645), completed the dialogue treatise The Sceptical Chymist: or Chymico-Physical Doubts and Paradoxes, touching the Experiments whereby vulgar Spagyrists are wont to endeavour to evince their salt, sulphur and mercury, to be the true Principles of Things, a octavo of about three hundred and eighty pages, published in London by F. Crooke in November 1661. The book, written in the dialogue form of four natural-philosophers in conversation, dismantled the Aristotelian four-element theory (earth, water, air, fire) and the Paracelsian three-principle theory (salt, sulphur, mercury) that had been the twin-foundation of European alchemy for two thousand years. In their place Boyle proposed the modern operational definition of a chemical element: a substance that cannot, by any laboratory technique then known, be reduced to a simpler form. The Sceptical Chymist is, by every careful judgment of the history-of-science (Marie Boas Hall, Lawrence Principe), the foundational text of modern Western chemistry.
The Drapier's Letters
1724Swift
Between the second of March and the second of December 1724, in the Deanery of St Patrick's Cathedral in Dublin, Jonathan Swift, fifty-six years old, the Dean of St Patrick's since 1713, wrote and published anonymously seven pamphlets attacking the patent granted by the British Crown in 1722 to the Wolverhampton hardware merchant William Wood for the minting of about £108,000-worth of copper half-pennies and farthings for circulation in Ireland. The pamphlets, published in the form of letters from a fictitious Dublin draper M. B. Drapier, argued by progressive escalation that the English commercial domination of Ireland was incompatible with the constitutional position of Ireland as a kingdom under the same Crown, and that the country's legal-political autonomy required the rejection of the patent. The political effect was the largest mass-popular Irish political mobilisation of the eighteenth century: by the end of November 1724, no merchant or shopkeeper in Dublin would accept Wood's coinage, the Lord Lieutenant Lord Carteret was unable to enforce its circulation, and on the eleventh of August 1725 the patent was withdrawn by the Walpole ministry in London. The reward of three hundred pounds offered by Carteret for the Drapier's identity was never claimed; the printer John Harding had been arrested in November 1724 and the grand jury under Lord Chief Justice Whitshed had refused to find a true bill against him.
Champions of a name
Champions of Ireland
Brian Boru
The Dál gCais chief of Munster who through the years 976 to 1002 unified the Irish kingdoms under his single overlordship, took the high-kingship at Tara in 1002 as the first non-Uí Néill High King of Ireland, and at Clontarf on Good Friday 1014 broke the political power of the Norse over Dublin.
Sorley Boy MacDonnell
The Gaelic chief of the Glens and Route of Antrim who held the north coast against the Tudor reconquest for forty years, retook Dunluce Castle in 1584, and secured his line at the head of Catholic Antrim, from which the Earldom of Antrim descends.
Red Hugh O'Donnell
The young Lord of Tyrconnell who escaped from Dublin Castle through the winter mountains, raised the north of Ireland against the Tudor conquest, and broke an English army at the Curlew Pass before carrying his country's cause to the court of Spain.
Robert Boyle
The fourteenth child of the Earl of Cork, born at Lismore Castle, who at Oxford in the 1660s built the air pump, formulated the gas law that bears his name, and in The Sceptical Chymist of 1661 founded modern chemistry.
Jonathan Swift
The Dublin-born Trinity classicist and Anglican cleric whose Gulliver's Travels, Modest Proposal and Drapier's Letters set the model for English-language political satire and made him the public conscience of Hanoverian Ireland.
Turlough O'Carolan
The Meath-born blind harper of the late-Gaelic Connacht courts whose two hundred and twenty surviving airs, composed between roughly 1690 and his death in 1738 across his itinerant career through the Anglo-Irish and Gaelic gentry houses of Connacht and Ulster, constitute the foundational corpus of the modern Irish harp tradition.
Arthur Guinness
The Kildare brewer who in 1759 took a nine-thousand-year lease on a four-acre Dublin yard and built from it the largest brewery in the world.
Edmund Burke
The Dublin-born Trinity classicist whose Reflections on the Revolution in France (1790) set the foundational text of modern English-language political conservatism and whose parliamentary speeches on American conciliation and Indian government are on every list of the greatest political oratory in the English language.
James Power
The Kilkenny publican who in 1791 set up a small pot-still at the corner of Thomas Street and John's Lane in Dublin and built from it the Power's distillery that by the 1880s was the largest single-distillery operation in the world.
Daniel O'Connell
The Kerry barrister who organised the Catholic millions of Ireland into the first great peaceful mass movement and won Catholic Emancipation without firing a shot, earning forever the name of the Liberator.
John Doherty
The Inishowen cotton-spinner's son who walked to Manchester at ten, founded the Grand General Union of Operative Spinners in 1829 and the National Association for the Protection of Labour in 1830, the first national general-trades union in British history, and led the working-class campaign for the Ten-Hour Day.
John O'Mahony
The Limerick gentleman-farmer and Gaelic scholar who joined Young Ireland, founded the Fenian Brotherhood in New York in 1858, naming it for the medieval Irish warrior bands, and was the foundational figure of the modern Irish-American republican movement.
Cross-border
Names that span the border into Ireland
These surnames are primarily homed elsewhere on the site, but carry enough history in Ireland to belong here too. The page is the same; the doorway is yours.
Butler
Also from EnglandThe cellarer's name, and the Earls of Ormond of Kilkenny.
Hart
Also from EnglandAt the sign of the hart.
Hughes
Also from WalesSon of Huw / son of Aodh, Welsh patronymic and Irish Mac Aodha under one spelling.
Clan Mellon
Also from ScotlandUlster Scot banking dynasty that ran America's Treasury under three presidents.
Moore
Also from EnglandBy the moor, or sons of Mórdha; English heath and Irish sept under one Anglicisation.
Robinson
Also from EnglandSon of Robin, the Danelaw's favourite -son, and the first woman President of Ireland.
Clan Ross
Also from ScotlandThe promontory clan, earls of the North.
Smith
Also from ScotlandThe forge surname, the most common occupational name in Scotland and the world.