Dunne and Dunn are the anglicized forms of the Gaelic Ó Duinn, "descendant of Donn," and the family's homeland is Uí Riagáin, or Iregan, in the north of County Laois, where the Ó Duinn were lords into the seventeenth century. The two spellings share one Irish story, and you can see the full range for both in our Dunn & Dunne Irish family gifts collection.
Quick answer: Dunne is Ó Duinn, from donn, "brown." The Ó Duinn of Uí Riagáin, a branch of the Uí Failghe, ruled Iregan, the modern barony of Tinnahinch in County Laois, and fought the sixteenth-century plantations of Laois and Offaly. Dunn is the usual Ulster spelling and Dunne the form almost everywhere else in Ireland. Together they ranked as the 26th most common surname in Ireland in both 1890 and 1996.
What Is the Meaning and Origin of the Dunne Name?
Father Patrick Woulfe's Irish Names and Surnames (1923) gives the Gaelic form as Ó Duinn and lists its English forms as O'Dunne, O'Doyne, Dunne, Dunn, Dun, Doyne and Dyne. The name means "descendant of Donn," and donn is the Irish word for brown, a description of a brown-haired or dark-complexioned ancestor. The Ó marks descent from that founding Donn, who according to the place-name research of logainm.ie was a grandson of Riagán, the ancestor who gave the territory its name.
Woulfe identifies two distinct families of the name. The great one is Ó Duinn of Uí Riagáin, a branch of the Uí Failghe and, in his words, one of the chief families of Leinster. The second was Ó Duinn of Tara, a family dispossessed soon after the Anglo-Norman invasion. By Woulfe's day the name was very common in Leinster and Munster. In sixteenth-century English records the name was usually written O'Doyne, a form worth remembering when you search early documents.
Dunn is also an English and Scottish surname in its own right, from the Old English dunn, dark-colored, and some Dunns in Ireland descend from English settlers. In Ulster there is a further Scottish line: a family of the name rode among the families of the Scottish Border and many of them settled in Fermanagh after the Border families were broken up in 1603. Those lines are separate from the Gaelic Ó Duinn, but the great majority of Irish Dunnes and Dunns descend from the Ó Duinn of Iregan.
Where Was Iregan, the Ó Duinn Homeland?
Uí Riagáin means "descendants of Riagán." In later centuries the district was called Dúiche Ó Riagáin, the O'Regan country, and nineteenth-century locals still spoke of Dooregan. English records name it as Oregan, Iregan and Irregan from 1282 onward, in sources such as the Calendar of Documents relating to Ireland and the Irish Patent Rolls. Woulfe states that Iregan was co-extensive with the barony of Tinnahinch, and logainm.ie confirms that the barony of Tigh na hInse, "the house of the river-island," was the old Uí Riagáin. It lies in the north of County Laois on the Offaly border, taking in the Laois slopes of the Slieve Bloom Mountains and the country around Clonaslee.
The Ó Duinn were the principal Gaelic family of the barony, and their own manuscript collection, now preserved at Marsh's Library in Dublin, remains one of the key records for the place names of northern Laois.
Iregan was not Loígis. Loígis, Laois proper, was the territory of the Ó Mórdha, the O'Mores, whom Woulfe calls the chiefs of Leix, with their fortress at Dunamase near Portlaoise. The Seven Septs of Laois, the confederation led by the O'Mores, were the O'Mores, O'Kellys, O'Lalors, O'Deevys, MacEvoys, O'Dorans and O'Dowlings; the Dunnes were a separate lordship. When the Tudor state shired the midlands, the new Queen's County took the name of the O'More territory and gathered its neighbors, Iregan among them, into one county.
Who Were the Ó Duinn Lords of Iregan?
The principal castle of the Dunnes stood at Tinnahinch, in the old parish of Rearymore east of Clonaslee. It was built by Tadhg Ó Duinn, who ruled the territory in 1475, and it gave its name to the barony. From that base the lords of Iregan held the northern edge of the midlands, between the bogs of Offaly and the Slieve Bloom uplands, and ruled their territory under Gaelic law.
The name was already distinguished long before the castle was built. Gilla na Náem Ua Duinn, poet and historian, died in 1160 as lector, or chief teacher, of Inis Clothrann, the monastic island on Lough Ree, and the annals remembered him as a master of history and poetry.
The Dunnes' Leinster world connects them to other great Gaelic families of the province. The Kavanagh family, descended from Diarmait Mac Murchada and the MacMurrough kings of Leinster, were the paramount Gaelic dynasty of the southeast, and the Ó Duinn lords of Iregan lived within the same broad Leinster political landscape. The Fitzpatrick family, Mac Giolla Phádraig in Gaelic and lords of Ossory across what are now Laois and Kilkenny, were near neighbors in the midlands, and their own path through the 1541 Surrender and Regrant settlement offers a useful comparison with Iregan. The Moore family, the Ó Mórdha chiefs of Laois proper, held the heart of the county to the southeast of Iregan and bore the brunt of the plantation that followed.
How Did the Dunnes Resist the Tudor Plantations?
The sixteenth century brought the full weight of Tudor power to the Gaelic midlands. The policy of surrender and regrant, introduced under Henry VIII, asked Gaelic lords to hand their lands to the Crown and take them back as English tenants-in-chief, trading Gaelic succession for English primogeniture. English pressure reached Iregan early: in 1547 the forces of the lord deputy, Sir Anthony St Leger, built a fortification at Tinnahinch itself.
In 1556 the Crown created Queen's County and King's County, modern Laois and Offaly, to hold the lands of the O'Mores and O'Connors for English settlers, the first great plantation of the Tudor era. John Grenham, summarizing MacLysaght, records that the Ó Duinn were especially active in the resistance to the plantations of King's and Queen's counties in the sixteenth century. The surrounding woods and bogs, which the English found hard to control, gave the midland families room to raid and regroup, and the struggle kept Gaelic lordship alive in Iregan for another two generations.
The Nine Years' War of 1593 to 1603 drew the midland families into the Ulster-led war against Elizabeth, and its defeat, sealed at Kinsale in 1601, hastened the collapse of Gaelic lordship across Ireland. Grenham notes that the Ó Duinn were still known as Lords of Iregan into the seventeenth century. The wars of the 1640s and the Cromwellian conquest finished the old order: Cromwellian forces destroyed Tinnahinch Castle in 1653.
The family did not leave its country. A landed branch, the Dunnes of Brittas near Clonaslee, remained in Iregan into modern times. General Edward Dunne of Brittas and his son Francis Plunkett Dunne, member of Parliament for Portarlington from 1847 to 1857 and for Queen's County from 1859 to 1868, kept the name prominent in the county, and in 1869 Francis rebuilt Brittas Castle; the house burned in 1942, and its ruined tower still stands. Around them, Dunne farmers and laborers kept the surname thick on the ground in north Laois, where it remains extremely common today.
For anyone wanting to mark the name at home, a Dunn woven blanket or a Dunne heirloom woven blanket makes a fitting centerpiece, while a Dunn crest mug, a Dunne crest mug or a Dunn garden flag works for everyday use.
The full range for both spellings sits in one place: the Dunn & Dunne Irish Family Gifts & Heritage collection.
Where Are Dunne and Dunn Families Found Today?
With 364 births of the name recorded in 1890, Dunne was the 26th most common surname in Ireland, and it held exactly the same rank in 1996. The name is still extremely common in north Laois, the old Iregan country, and is now spread throughout Ireland with particular strength in Leinster. Woulfe found it very common in Munster as well by the 1920s.
The spelling follows geography. In Ulster, where English influence on record-keeping was stronger, the name is generally spelled Dunn; in the rest of Ireland it is almost invariably Dunne. Emigration in the nineteenth and twentieth centuries carried both spellings to the United States, Canada, Australia, New Zealand and Britain, and families often settled on one form or the other only after arrival, so both belong in any search.
How Do I Research My Dunne or Dunn Ancestors?
Start with the most recent generation you can document and work back. Search every spelling each time: Dunne, Dunn, O'Dunne, Dun, Doyne and, for the sixteenth and seventeenth centuries, O'Doyne.
- IrishGenealogy.ie for civil birth, marriage and death records, with non-Catholic marriages from 1845 and all registrations from 1864.
- The National Archives of Ireland census for the 1901 and 1911 returns, searchable by name and townland.
- PRONI, the Public Record Office of Northern Ireland, for Ulster Dunns, including will calendars and valuation records.
- Griffith's Valuation (1847 to 1864) to place a family on a townland, then follow it forward through the valuation books.
- The National Library of Ireland's Catholic parish registers, free online, for baptisms and marriages before civil registration; for Iregan families, begin with the parishes around Clonaslee and Rosenallis.
- logainm.ie to identify townlands in the barony of Tinnahinch and trace older spellings of the places your family lived.
Notable People Named Dunne and Dunn
Gilla na Náem Ua Duinn (d. 1160) was a poet and historian and lector of Inis Clothrann on Lough Ree, one of the earliest bearers of the name recorded in the annals.
Ben Dunne (1908–1983), born in County Down to parents who spelled the name Dunn, opened the first Dunnes Stores in Cork in 1944 under the slogan "Better value beats them all." By his death the business had 64 branches and 3,500 employees, and it remains one of Ireland's best-known retailers.
Seán Dunne (1956–1995), born in Waterford, was a poet and literary editor of the Cork Examiner, remembered for the memoir In My Father's House (1991) and The Road to Silence: An Irish Spiritual Odyssey (1994).
Frequently Asked Questions About the Dunne Name
Is Dunne an Irish surname?
Yes. Dunne is the anglicized Ó Duinn, the family of the lords of Iregan in north County Laois, one of the chief families of Leinster.
What does the name Dunne mean?
It means "descendant of Donn," from donn, brown, a name given to a brown-haired or dark-complexioned ancestor.
Are Dunn and Dunne the same name?
In Ireland, yes. Both come from Ó Duinn; Dunn is the usual Ulster spelling and Dunne the form elsewhere. Outside Ireland, Dunn is also an English and Scottish surname with its own separate origin.
Where in Ireland do the Dunnes come from?
From Iregan, the barony of Tinnahinch in north County Laois, around Clonaslee and the Slieve Bloom Mountains. The name is now common across Leinster.
Were the Dunnes the chiefs of Laois?
They were lords of Iregan, which is now part of County Laois. Laois proper, the old Loígis, was the territory of the O'Mores.
How common is the Dunne name?
Very. Dunne ranked as the 26th most common surname in Ireland in 1890 and again in 1996.
Whether your family writes the name Dunne or Dunn, the story leads back to Iregan. Explore our Dunn & Dunne Irish family gifts to bring the Ó Duinn name home.