Clan Rising

McCarthy

also MacCarthy, Mac Cárthaigh, Carthy

Of Desmond and Cashel, the line of the Eóganachta.

Origin
Munster, Ireland
Motto
Forti et Fideli Nihil Difficile
Famous bearer
Cormac Láidir Mac Cárthaigh (d. 1494), lord of Muskerry, builder of Blarney Castle
Register
Irish family
#9

Ranked of all time

The 10 Most Powerful Irish Clans of All Time

See the leaderboard →
#6

Ranked of all time

The 10 Oldest Clans in Ireland

See the leaderboard →

The McCarthy arms and country

  • Coat of arms of McCarthy: McCarthy Arms
    Coat of armsMcCarthy ArmsJohn O'Hart · Public domain
  • 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 McCarthy

CoreHistoric reach

The seat of McCarthy

Seat vacant

Chief

No one leads the McCarthy 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 McCarthy has leadership, it sets the public focus: a restoration, a gathering, a real-world project that helps its own.

The McCarthy 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 McCarthy clan →

Motto

Forti et Fideli Nihil Difficile

To the brave and faithful nothing is difficult

What does the McCarthy name mean?

From Mac Cárthaigh, son of Cárthach. Cárthach mac Sáebrethaig (d. 1045) was king of Eóganacht Caisil. His grandson Muiredach Mac Cárthaigh first used the surname around the 1080s. The McCarthys are the surviving line of the Eóganachta, the dynasty that ruled Munster from the 5th to the 10th century, before being displaced from the high kingship of the province by Brian Boru's Dál Cais. The McCarthys then governed the southern half of Munster, Desmond, 'south Munster', for a further six centuries.

The history of McCarthy

Four MacCarthys where Glanmire had left one king

By the later Middle Ages there were four ruling MacCarthys, not one. The MacCarthy Mór held much of south Kerry and was nominal head of the whole name; the Duhallow line held north-west Cork; the MacCarthy Reagh, or Riabhach, 'grey', sat as kings of Carbery around Rosscarbery in the south-west; and Muskerry, on the Cork–Kerry border, began about 1353, when it was given as an appanage to Dermot MacCarthy, second son of Cormac MacCarthy Mór.

Carbery became the most independent of the four, a small wealthy kingdom with its own army, standing apart from Desmond and from England into the mid-seventeenth century. Below the branches sat the septs: Kerry alone counted eleven in King's History of County Kerry, among them Sliocht Owen of Coshmaing and Sliocht Fineen Duff of Ardeanaght. A Gaelic fine held the chief's kin and also unrelated clients, who took the leading lineage's name as a declaration of allegiance.

Cormac Láidir and the towers he left standing

Cormac Láidir MacCarthy, ninth Lord of Muskerry (1411–1494), is the builder the family is measured by. Beyond the great keep of 1446, he had Kilcrea Castle finished by 1465 beside the River Bride west of Cork city, raised on marshy ground over an older fort, and founded Kilcrea Friary next to it. The two have gone separate ways since: the friary is in state care, the tower stands hidden by trees on a working cattle farm.

His brother Dermot Mór of Drishane is credited by some sources with Carrigaphooca in the same years: Caisleán Charraig a' Phúca, 'castle on the rock of the fairy', five storeys on a jagged rock above the Sullane, built for protection rather than comfort and containing no fireplace at all. Macroom, whose Irish name Caisleán Uí Fhloinn suggests the O'Flynns held it before 1353, was enlarged by Teige MacCarthy, eleventh Lord Muskerry, who died there in 1565.

Tanistry surrendered, and the kingdom dissolved in 1596

When the Kingdom of Ireland was created in 1541, Dublin set about turning chiefs into peers, granting new arms in 1552 and, through surrender and regrant, replacing tanistry with primogeniture. Tanistry had elected a chief from the agnatic cousins of a shared grandfather; the crown of Desmond was vested in the Mac Carthy Mór on those terms until the kingdom was dissolved in 1596. The change did more damage than any siege: it made every succession a matter for English courts.

The Second Desmond Rebellion of the 1580s moved Ross Castle, on Lough Leane, from the O'Donoghues Mór to the MacCarthy Mór, who promptly leased castle and lands to Sir Valentine Browne, ancestor of the Earls of Kenmare. The same Browne took Ballycarbery, above the sea near Cahersiveen, on the death of Donal McCarthy More. After Kinsale in 1601, Cormac Teige McCarthy of Blarney took refuge at Carrigaphooca; in 1602 that rock was stormed by Donal Cam O'Sullivan Beare, a McCarthy kinsman beside him.

The Nuncio at Macroom and the garrison that fired its own gate

In 1645 the papal Nuncio Rinuccini was received at Macroom by Lady Muskerry and her eleven-year-old son Charles. The year after, Parliamentarians seized Blarney. In 1650, with Lord Broghill's troops closing, the Macroom garrison set fire to the building rather than surrender it and marched out to join the Confederate army that Boetius MacEgan, Bishop of Ross, had assembled at the castle.

At Killarney, Lord Muskerry held Ross against Edmund Ludlow, who came up with four thousand foot and two hundred horse and then took the place by water rather than by land. Owen MacCarthy had still held Drishane at his death in 1637; after the Confederate Wars of 1641–53 the family lands were forfeit almost entirely. Charles II's return in 1660 handed much of it back to Donough MacCarty, made first Earl of Clancarty.

1691, and the estates that went to the Hollow Sword Blade Company

Donough MacCarthy, fourth Earl of Clancarty (1670–1734), fought for James II in the Williamite War and was attainted at the defeat in 1691. Macroom went that year, definitively. The earldom of Clancarty, the viscountcy of Muskerry and the barony of Blarney fell with him, and by 1694 the family had lost every title and peerage it held in Ireland. Blarney passed eventually to the Jefferyes.

The forfeited Cork and Kerry estates went to the Hollow Sword Blade Company, a speculation that broke up in resale what six centuries had assembled: Drishane to Henry Wallis in 1709, Carrignacurra to the Masters family in the 1720s. The men of the name went abroad to soldier: Justin MacCarthy, Viscount Mountcashel, dead in 1694; Charles MacCarthy (1764–1824), who served the French, Dutch and British armies in turn.

Justin, Florence, and the shapes the name took in English

Two forenames travel with this family. Cárthach's father was Saoirbhreathach, anglicised as Justin, and Justin has run unbroken through the branches since. Finghin, anglice Fineen, was rendered in English as Florence, colloquially Flurry, the name of the Fineen who broke the Geraldines in 1261, of Florence MacCarthy (1563–1640), and of the Irish poet Denis Florence MacCarthy (1818–1882). Where English used numbers, Irish used epithets: Láidir for the strong, Oge the younger, Riabhach the grey.

The written form fractured when Gaelic went into English script. Mac was rendered Mc or M'; where the prefix was struck off entirely the hard c survived it, which is how Mac Cárthaigh flattens to plain Carthy. Nic, the prefix marking a daughter, vanished into Mac regardless of sex. What survived is McCarthy in the main, MacCarthy in Anglo-Irish usage, McCarty across much of America, and sixty per cent of those carrying the name in Ireland still trace to County Cork.

The Knoxville boy who took a Muskerry lord's forename

Charles Joseph McCarthy was born at Providence, Rhode Island, on 20 July 1933, third of six children of a Tennessee Valley Authority lawyer descended from the West Cork McCarthys. The family followed his father's TVA posting to Knoxville in 1937, and in his twenties he took the name Cormac (the forename of the Muskerry lords, including the man who built the keep at Blarney) to separate the writing from his father. The Orchard Keeper appeared in 1965 under Albert Erskine, Faulkner's editor.

Blood Meridian came in April 1985, the Border Trilogy from 1992, and The Road took the 2007 Pulitzer; he spent thirty years as the only novelist among the physicists of the Santa Fe Institute, and died there on 13 June 2023. The name forks elsewhere: Mary McCarthy (1912–1989) in letters, Eugene McCarthy (1916–2005) of Minnesota in the 1968 primaries, and under the McCarty spelling the outlaw Henry 'Billy the Kid' McCarty (1859–1881) and Ted McCarty (1910–2001), who built electric guitars.

Champions of the McCarthy 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 McCarthy name knew, rebuilt with AI as they stood in history.

Or recreate your own castle →

Castles the McCarthy held

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

  • Blarney Castle

    Held by the MacCarthys of Muskerry, 1446–1690s.

  • Ross Castle

    Passed to the MacCarthy Mór during the Second Desmond Rebellion of the 1580s; Lord Muskerry later held it against Ludlow's army.

  • Macroom Castle

    Held by the MacCarthys of Muskerry, with interruptions, from about 1353 until Donogh MacCarthy, 4th Earl of Clancarty, lost it in 1691.

  • Ballycarbery Castle

    Held by the MacCarthys; on the death of Donal McCarthy More the castle passed to Sir Valentine Browne.

  • Carrigaphooca Castle

    Built by the MacCarthys of Muskerry in the early 15th century; a refuge for Cormac Teige McCarthy of Blarney after the Siege of Kinsale in 1601.

  • Kilcrea Castle

    Built by 1465 by Cormac Laidir MacCarthy, 9th Lord of Muskerry, founder of Kilcrea Friary.

  • Dunasead Castle

    Purchased and restored by members of the McCarthy family, 1997–2005.

  • Drishane Castle

    Built by the MacCarthys in the 15th century; restored to Donough MacCarty, 1st Earl of Clancarty, in 1660.

  • Carrigrohane Castle

    Credited with the original construction of the castle above the River Lee.

  • Carrignacurra Castle

    Restored to the MacCarthys after the 1641 forfeiture, with the O'Learys as tenants.

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 McCarthyStart 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 McCarthy name

  • Cormac Láidir Mac Cárthaigh (d. 1494), lord of Muskerry, builder of Blarney Castle
  • Cormac McCarthy (1933–2023), American novelist
  • Eugene McCarthy (1916–2005), US Senator, 1968 presidential candidate
  • Mary McCarthy (1912–1989), American writer

Stories of McCarthy

Frequently asked

What does the surname McCarthy mean?

From Mac Cárthaigh, son of Cárthach. Cárthach mac Sáebrethaig (d. 1045) was king of Eóganacht Caisil. His grandson Muiredach Mac Cárthaigh first used the surname around the 1080s. The McCarthys are the surviving line of the Eóganachta, the dynasty that ruled Munster from the 5th to the 10th century, before being displaced from the high kingship of the province by Brian Boru's Dál Cais. The McCarthys then governed the southern half of Munster, Desmond, 'south Munster', for a further six centuries. The McCarthys were the dominant Gaelic dynasty of southern Munster from the 11th century to the Tudor conquest, ruling the kingdom of Desmond from a chain of fortresses through Cork and Kerry, Carrigaphooka, Kilcrea, Macroom, Blarney, Pallice.

Where does the McCarthy family come from?

The McCarthy family is rooted in Munster, in Ireland. Within that, the name was particularly concentrated in Cork and Kerry. The atlas page for the name records the historical territory it has held over the centuries.

Where did the McCarthy family historically hold territory?

At its greatest historical extent, the McCarthy name has been concentrated in Limerick, Tipperary and Waterford. The atlas page distinguishes the core territory of the name from this wider historical reach with hatched silhouettes on the map.

Is McCarthy Irish or Scottish?

McCarthy 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 McCarthy surname?

The McCarthys were the dominant Gaelic dynasty of southern Munster from the 11th century to the Tudor conquest, ruling the kingdom of Desmond from a chain of fortresses through Cork and Kerry, Carrigaphooka, Kilcrea, Macroom, Blarney, Pallice. European hereditary surnames crystallised broadly between the 12th and 14th centuries, and the McCarthy name took its modern form within that long settlement.

What is the McCarthy family known for?

Of Desmond and Cashel, the line of the Eóganachta. The McCarthys were the dominant Gaelic dynasty of southern Munster from the 11th century to the Tudor conquest, ruling the kingdom of Desmond from a chain of fortresses through Cork and Kerry, Carrigaphooka, Kilcrea, Macroom, Blarney, Pallice.

What is the McCarthy motto?

The motto of the McCarthy family is "Forti et Fideli Nihil Difficile", which translates as "To the brave and faithful nothing is difficult". Family mottoes were registered with the chief of the name and carried on the heraldic arms and battle-banners.

What does "Forti et Fideli Nihil Difficile" mean in English?

"Forti et Fideli Nihil Difficile" is the motto of the McCarthy family. In English it means "To the brave and faithful nothing is difficult". 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 McCarthy family crest or coat of arms?

There is no single coat of arms that belongs to everyone named McCarthy. 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 "Forti et Fideli Nihil Difficile".

Who is the most famous McCarthy?

The best-known bearer of the McCarthy name is Cormac Láidir Mac Cárthaigh (d. 1494), lord of Muskerry, builder of Blarney Castle. Other prominent figures of the family include Cormac McCarthy (1933–2023), American novelist, Eugene McCarthy (1916–2005), US Senator, 1968 presidential candidate and Mary McCarthy (1912–1989), American writer.

Who are some famous McCarthys?

Notable bearers of the McCarthy name include Cormac Láidir Mac Cárthaigh (d. 1494), lord of Muskerry, builder of Blarney Castle, Cormac McCarthy (1933–2023), American novelist, Eugene McCarthy (1916–2005), US Senator, 1968 presidential candidate and Mary McCarthy (1912–1989), American writer. 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 McCarthy family?

The McCarthy family is associated with The Blarney Stone. 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 the Blarney Stone?

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. The event is dated to c. 1446.

Is MacCarthy the same family as McCarthy?

Yes. MacCarthy is a historical spelling variant of the McCarthy 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 Mac Cárthaigh the same family as McCarthy?

Yes. Mac Cárthaigh is a historical spelling variant of the McCarthy 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 Carthy the same family as McCarthy?

Yes. Carthy is a historical spelling variant of the McCarthy 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 McCarthy surname found today?

Ireland is the primary historical home of the McCarthy 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 McCarthy family cover?

The Clan Rising page for the McCarthy 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 McCarthy family today?

The seat for the head of the McCarthy 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