Clan Rising

Kelly

also O'Kelly, Ó Ceallaigh

Second most common Irish surname, the Uí Maine of Galway, and six other dynasties besides.

Origin
Connacht, Ireland
Motto
Turris fortis mihi Deus
Famous bearer
William Buidhe Ó Ceallaigh, 14th-c. lord of Uí Maine, host of the great 1351 feast
Register
Irish family
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The Kelly arms and country

  • Coat of arms of Kelly: Arms of Kelly of that Ilk
    Coat of armsArms of Kelly of that IlkThe chief's own arms, borne by the head of the name alone; “of that Ilk” is the designation that says so.Celtus · CC BY-SA 3.0
  • Coat of arms: Granted to an individual and inherited down that one documented line. These are the arms of particular families of the name, not of everyone who shares the surname.
Territory of Kelly

CoreHistoric reach

The seat of Kelly

Seat vacant

Chief

No one leads the Kelly community yet. When the movement opens, you can stand for its leadership, or help elect whoever does.

Current mission

No shared goal set yet. Once Kelly has leadership, it sets the public focus: a restoration, a gathering, a real-world project that helps its own.

The Kelly clan is being rebuilt. Join the waiting list for the movement today, and you help decide who leads it and what it does.

Help rebuild the Kelly clan →

Motto

Turris fortis mihi Deus

God is to me a tower of strength

What does the Kelly name mean?

Anglicised from Ó Ceallaigh, descendant of Ceallach. Ceallach is an Old Irish personal name often glossed as 'bright-headed' or 'frequenter of churches', though the etymology is contested. At least seven distinct Ó Ceallaigh kindreds gave rise to the modern Kellys, the principal one being the Uí Maine of east Galway and south Roscommon. The Anglicised form Kelly displaced the Gaelic by the 18th century; the older O'Kelly form persists in family-name register but is less commonly written.

The history of Kelly

Seven kindreds, one spelling

Kelly is not one family. It is at least seven, unrelated to each other, squeezed into a single English spelling. Most Kellys descend from Ó Ceallaigh, 'descendant of Ceallach', but the separate line Ó Cadhla was also anglicised as Kelly, and the O'Kelly of Clan Brasil Mac Coolechan began as a chieftain kindred of the Ulaid in the north-east, with no connection to the western Ó Ceallaigh at all. The name arose independently in several parts of Ireland, and again in Scotland, the Isle of Man and England.

Even the meaning is contested: Ceallach was long glossed as 'bright-headed', the current reading takes it from the Irish ceall as 'frequenting churches', and a third tradition reads it as warrior. The scale is not. Counting Kelly, Kelley, Kellie, O'Kelly and Ó Ceallaigh together it is the most prevalent surname in Ireland; on the plain Kelly spelling alone it stands second only to Murphy.

The flattening happened in the anglicising, as clerks stripped the Gaelic prefixes writing names into English records. Kelly had displaced the Gaelic form by the 18th century, and the kindreds were compressed into one word before anyone thought to keep them apart.

Uí Maine: the kingdom on the Shannon

The greatest Ó Ceallaigh kindred ruled Uí Maine, a kingdom in south Connacht taking in all of County Galway east of Athenry and all of southern and central County Roscommon. It stood as an independent kingdom from prehistoric times and as a subject kingdom to the end of the medieval era. Tadhg Mór Ua Cellaigh died in 1014; Conchobar reigned from 1221 to 1268; Aedh mac Brian held the kingship for forty-three years, from 1424 to 1467.

The genealogy behind those kings must be read with care. Tradition traces the kindred to Maine Mór, placed around 357 to 407, and pedigrees compiled from the 8th century onward (Rawlinson B 502, the Book of Ballymote, MacFhirbisigh's Leabhar Mór na nGenealach) carry it further still. At least one genetic study concludes that while such genealogies appear fairly accurate back into the Middle Ages, they are unreliable before the 7th century. The earliest Uí Maine kings are semi-historic and their dates approximate.

The welcome of the O'Kellys

William Buidhe Ó Ceallaigh, who ruled Uí Maine from about 1349 to 1381, is remembered for a feast rather than a battle. At Christmas 1351, at his castle of Galey on Lough Ree, he entertained the poets, harpers and historians of Ireland, the largest gathering of the learned orders in the medieval Irish record, drawing men from every part of the island and running the full twelve days.

From it the phrase fáilte Uí Cheallaigh, the welcome of the O'Kellys, entered the Irish language, and it still means hospitality without limit. Few families leave a proverb behind in a living tongue.

Tower houses, surrender and regrant, and the fall

The Ó Ceallaigh built in stone across east Galway: Monivea Castle began as an O'Kelly tower house, and Clonbrock was theirs, estate and tower both, until the late 16th century. Then the ground moved. English common law spread through Ireland, sheriff and county displacing chief and country, and when the Kingdom of Ireland was created in 1541 Dublin drew the Gaelic lords inside it, granting them new arms in 1552. Surrender and regrant swapped Irish tanistry, under which a chief was elected from a group of eligible cousins, for primogeniture.

The Ó Ceallaigh went down hard. Tomás MacCnaimhín O'Kelly held the chiefship from 1590 to 1602 and was executed; Feardorcha followed to 1611, at the end of the Gaelic order. The Cromwellian dispossession of 1652 took land held for six centuries, and on 12 July 1691 James O'Kelly of the Aughrim branch was killed at the Battle of Aughrim, fought on ground his own family had ruled.

What survived went into branches and into Continental nobility. The senior line is the O'Kelly de Gallagh and Tycooly, Counts of the Holy Roman Empire and Chiefs of the Name, beside O'Kelly of Aughrim, of Mullaghmore and of Screen. The motto Turris fortis mihi Deus (God is to me a tower of strength) reads differently once you know how many towers they lost.

Why the surname proves nothing about descent

An Irish clan, a fine, was never a closed blood group. It held the chief and his patrilineal relatives, but also unrelated clients of the chief, and those clients and their descendants took the name of the leading lineage as a show of allegiance. They could never be elected chief and they were not kin, but they were Kellys, and so were their children. Uí Maine was shared ground too: the Ó Ceallaigh were its chiefs, but the same grouping carried the O'Maddens, O'Donnellans, O'Fahys and O'Concannons. A Madden and a Kelly from east Galway may be closer kin than two Kellys from opposite ends of Ireland.

Outside Ireland the spelling multiplies again. Kelly is common in Galloway and on the Isle of Man, partly through Irish migration before and during the Famine, but not only. A John de Kelly was Abbot of Arbroath in 1373, and William de Kellaw bailiff to Alexander III in 1278. There is a Kelly in Devon from the Cornish celli, 'wood' or 'grove', and on Man, in Cornwall and probably in Antrim the name grew from that root instead: man of the woods, not descendant of Ceallach.

The Kellys who left

Ned Kelly (1854-1880), born at Beveridge to a Tipperary man transported to Australia, led the Kelly Gang through the north-east Victorian high country from 1878 and on 27 June 1880 stood at Glenrowan in home-made plough-steel armour, the central image of Australian folk memory. Captain Edward Kelly won the Victoria Cross in the Boer War. Grace Kelly (1929-1982), born in Philadelphia of Mayo-Kelly descent, became Princess of Monaco in 1956; Gene Kelly (1912-1996) rebuilt screen dance around athleticism and the ordinary street.

A Kelly today cannot know for certain which of the seven kindreds is theirs. What they can know is that the name was worth taking: that unrelated men chose it deliberately, to stand under a lord whose hospitality became a proverb and whose kingdom on the Shannon outlasted almost every other in Europe.

Champions of the Kelly name

The bearers whose lives are inseparable from this surname. Each has their own page, biography, achievements, geography, connection to the family.

Historic Places, Rebuilt

Explore the streets and seats the Kelly name knew, rebuilt with AI as they stood in history.

Or recreate your own castle →

Castles the Kelly held

Strongholds this name held for a decade or more, look one up, or rebuild it to explore.

  • Clonbrock Castle

    Original owners of the estate and tower house until the late 16th century.

  • Monivea Castle

    Original builders, Monivea began as an O'Kelly tower house.

The castles of the homeland

The great strongholds of the homeland, look one up, see what it looked like in its prime, and recreate it to explore.

All castles in Ireland · Strongest castles in Ireland · Castles of Europe

Play As Your Clan

Explore history as a KellyStart your story →

Hold a real castle against whatever you choose to send at it, take a ship out in her own service years, or stand at the shoulder of someone the record remembers. The chronicler sets the scene; the deeds are yours.

Notable bearers of the Kelly name

  • William Buidhe Ó Ceallaigh, 14th-c. lord of Uí Maine, host of the great 1351 feast
  • Grace Kelly (1929–1982), actress, Princess of Monaco
  • Ned Kelly (1854–1880), Australian bushranger of Tipperary-Kelly descent
  • Gene Kelly (1912–1996), dancer, choreographer

Stories of Kelly

Frequently asked

What does the surname Kelly mean?

Anglicised from Ó Ceallaigh, descendant of Ceallach. Ceallach is an Old Irish personal name often glossed as 'bright-headed' or 'frequenter of churches', though the etymology is contested. At least seven distinct Ó Ceallaigh kindreds gave rise to the modern Kellys, the principal one being the Uí Maine of east Galway and south Roscommon. The Anglicised form Kelly displaced the Gaelic by the 18th century; the older O'Kelly form persists in family-name register but is less commonly written. Kelly is the second most common surname in Ireland, after Murphy.

Where does the Kelly family come from?

The Kelly family is rooted in Connacht, in Ireland. Within that, the name was particularly concentrated in Galway and Roscommon. The atlas page for the name records the historical territory it has held over the centuries.

Where did the Kelly family historically hold territory?

At its greatest historical extent, the Kelly name has been concentrated in Offaly, Mayo, Leitrim, Sligo and Derry. The atlas page distinguishes the core territory of the name from this wider historical reach with hatched silhouettes on the map.

Is Kelly Irish or Scottish?

Kelly is a Irish surname; its home on this atlas is Ireland, where the historical territory and family record of the name are concentrated. The same or similar spellings can surface in Scottish records, but the lineage documented on this page is the Irish one.

How old is the Kelly surname?

Kelly is the second most common surname in Ireland, after Murphy. European hereditary surnames crystallised broadly between the 12th and 14th centuries, and the Kelly name took its modern form within that long settlement.

What is the Kelly family known for?

Second most common Irish surname, the Uí Maine of Galway, and six other dynasties besides. Kelly is the second most common surname in Ireland, after Murphy.

What is the Kelly motto?

The motto of the Kelly family is "Turris fortis mihi Deus", which translates as "God is to me a tower of strength". Family mottoes were registered with the chief of the name and carried on the heraldic arms and battle-banners.

What does "Turris fortis mihi Deus" mean in English?

"Turris fortis mihi Deus" is the motto of the Kelly family. In English it means "God is to me a tower of strength". The phrase is typically rendered in Latin, though some Highland families carry their motto in Gaelic and some Norman lines in Old French.

Is there a Kelly family crest or coat of arms?

There is no single coat of arms that belongs to everyone named Kelly. Heraldic arms were granted to individuals and descend through specific documented lines, so a "family crest" matched to a surname alone is decorative rather than genealogical. This page shows the coat of arms recorded for the name in the public heraldic record, with the specific line each belongs to named in its caption. The motto associated with the principal line is "Turris fortis mihi Deus".

Who is the most famous Kelly?

The best-known bearer of the Kelly name is William Buidhe Ó Ceallaigh, 14th-c. lord of Uí Maine, host of the great 1351 feast. Other prominent figures of the family include Grace Kelly (1929–1982), actress, Princess of Monaco, Ned Kelly (1854–1880), Australian bushranger of Tipperary-Kelly descent and Gene Kelly (1912–1996), dancer, choreographer.

Who are some famous Kellys?

Notable bearers of the Kelly name include William Buidhe Ó Ceallaigh, 14th-c. lord of Uí Maine, host of the great 1351 feast, Grace Kelly (1929–1982), actress, Princess of Monaco, Ned Kelly (1854–1880), Australian bushranger of Tipperary-Kelly descent and Gene Kelly (1912–1996), dancer, choreographer. Each is profiled on the family page, with cross-links to the geography, stories, and historical events tied to their life.

What stories are told about the Kelly family?

The Kelly family is associated with Ned Kelly at Glenrowan. Each story has its own page on this site with the full account, the date, the location, and the other families involved.

What is the story of Ned Kelly at Glenrowan?

On the night of the twenty-seventh of June 1880, the bushranger gang of Edward (Ned) Kelly, twenty-five years old, the son of John Kelly the Tipperary-emigrant convict and Ellen Quinn of Antrim, in the third year of his outlaw career across the north-east of the colony of Victoria in Australia, attempted to derail a special police train bringing reinforcements to the village of Glenrowan, in the dry interior country two hundred kilometres north-east of Melbourne. The plan failed because the schoolmaster Thomas Curnow, held hostage with about sixty other villagers in the Glenrowan Inn, slipped out to the railway line with a candle and a red scarf and stopped the train. The event is dated to 1880.

Is O'Kelly the same family as Kelly?

Yes. O'Kelly is a historical spelling variant of the Kelly name. The two share the same lineage and family affiliation; different parishes, clerks and migration registrars recorded the same name in slightly different forms, and the variant spellings sit on the same family tree.

Is Ó Ceallaigh the same family as Kelly?

Yes. Ó Ceallaigh is a historical spelling variant of the Kelly name. The two share the same lineage and family affiliation; different parishes, clerks and migration registrars recorded the same name in slightly different forms, and the variant spellings sit on the same family tree.

Where is the Kelly surname found today?

Ireland is the primary historical home of the Kelly surname. In the modern era, the name is also borne across the wider diaspora, particularly in the United States, Canada, Australia and New Zealand, where families carry the line of descent from the same Ireland origin recorded on this page.

What does the Clan Rising page for the Kelly family cover?

The Clan Rising page for the Kelly family covers the meaning of the surname, the historical geography of the name, the family motto, famous bearers of the name, traditional stories and the seat of the head of the family. Each section is linked to the underlying atlas of Ireland so the name can be read in the geography that shaped it.

Who is the head of the Kelly family today?

The seat for the head of the Kelly family is currently vacant on this register. Clan Rising is rebuilding the chief and family structure for the modern era, and the family page allows readers to claim the seat or pledge to the name.

Neighbouring clans