Clan Rising

Sweeney

also McSweeney, Mac Suibhne

Hebridean gallowglass, household cavalry of Tír Chonaill.

Origin
Ulster, Ireland
Motto
Buaidh no bas
Famous bearer
Eoghan Óg Mac Suibhne na dTuath (fl. c.1600), gallowglass chief at the Battle of Kinsale
Register
Irish family
Territory of Sweeney

CoreHistoric reach

The seat of Sweeney

Seat vacant

Chief

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

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

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Motto

Buaidh no bas

“Victory or death”

What does the Sweeney name mean?

From Mac Suibhne, son of Suibhne ('pleasant'). The Mac Suibhne were a Hebridean Norse-Gael line, descendants of Suibhne, lord of Castle Sween in 13th-century Knapdale (modern Argyll, Scotland), where their stronghold still stands. Driven out of the Hebrides in the late 13th century, the Mac Suibhne re-established themselves in Donegal as gallowglass mercenaries to the O'Donnells of Tír Chonaill from c.1267. Three Donegal branches developed, Mac Suibhne Fanad (north-east Donegal), Mac Suibhne na dTuath ('of the territories', west Donegal), and Mac Suibhne Banagh (south-west Donegal). A separate Mac Suibhne line later settled in Munster as gallowglass to the MacCarthys, giving the Cork-Sweeney pool.

The history of Sweeney

The gallowglass, gall-óglaigh, foreign warriors, were the heavy-infantry mercenaries that transformed Irish warfare from the 13th century onward, replacing the older lighter-armed Irish kerns with Hebridean professionals in chain-mail wielding the great two-handed sparth axe. The Mac Suibhne were the foremost gallowglass line of north-west Ireland, contracted to the O'Donnells of Tír Chonaill from c.1267. The three Donegal branches each held a defined territory and provided defined numbers of warriors and rents in produce; the system survived until the Plantation of Ulster after 1607.

Eoghan Óg Mac Suibhne na dTuath, late-16th-century chief of the western branch, served Hugh O'Donnell at the Battle of Kinsale in 1601 and lost the family lands in the Plantation. The Donegal Sweeneys remained densely planted in their original territory through subsequent centuries; the diaspora is heaviest in north-east America, particularly Pennsylvania and Boston. John Sweeney (b. 1957), the BBC investigative journalist of Panorama and Newsnight, is of Irish-Sweeney descent. John J. Sweeney (1934–2021), the American labour leader, was president of the AFL-CIO from 1995 to 2009 and the first Catholic of openly Irish descent to lead the federation.

Champions of the Sweeney name

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

Step Into History

Walk the streets and seats the Sweeney name knew — a photoreal walk through time, on foot.

Step Into History · New

Walk Blarney Castle in 1500Enter →

The MacCarthy lords' great tower-house in its prime — the battlements and the famous stone, high over wooded Muskerry.

Notable bearers of the Sweeney name

  • Eoghan Óg Mac Suibhne na dTuath (fl. c.1600), gallowglass chief at the Battle of Kinsale
  • John J. Sweeney (1934–2021), president of the AFL-CIO 1995–2009
  • John Sweeney (b. 1957), BBC investigative journalist (Panorama, Newsnight)

Frequently asked

What does the surname Sweeney mean?

From Mac Suibhne, son of Suibhne ('pleasant'). The Mac Suibhne were a Hebridean Norse-Gael line, descendants of Suibhne, lord of Castle Sween in 13th-century Knapdale (modern Argyll, Scotland), where their stronghold still stands. Driven out of the Hebrides in the late 13th century, the Mac Suibhne re-established themselves in Donegal as gallowglass mercenaries to the O'Donnells of Tír Chonaill from c.1267. Three Donegal branches developed, Mac Suibhne Fanad (north-east Donegal), Mac Suibhne na dTuath ('of the territories', west Donegal), and Mac Suibhne Banagh (south-west Donegal). A separate Mac Suibhne line later settled in Munster as gallowglass to the MacCarthys, giving the Cork-Sweeney pool. The gallowglass, gall-óglaigh, foreign warriors, were the heavy-infantry mercenaries that transformed Irish warfare from the 13th century onward, replacing the older lighter-armed Irish kerns with Hebridean professionals in chain-mail wielding the great two-handed sparth axe.

Where does the Sweeney family come from?

The Sweeney family is rooted in Ulster, in Ireland. Within that, the name was particularly concentrated in Donegal. The atlas page for the name records the historical territory it has held over the centuries.

Where did the Sweeney family historically hold territory?

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

Is Sweeney a Ireland surname?

Yes, Sweeney is a Ireland surname. Its editorial home in this atlas is Ireland, where the historical territory and family record of the name are concentrated.

How old is the Sweeney surname?

The gallowglass, gall-óglaigh, foreign warriors, were the heavy-infantry mercenaries that transformed Irish warfare from the 13th century onward, replacing the older lighter-armed Irish kerns with Hebridean professionals in chain-mail wielding the great two-handed sparth axe. European hereditary surnames crystallised broadly between the 12th and 14th centuries, and the Sweeney name took its modern form within that long settlement.

What is the Sweeney family known for?

Hebridean gallowglass, household cavalry of Tír Chonaill. The gallowglass, gall-óglaigh, foreign warriors, were the heavy-infantry mercenaries that transformed Irish warfare from the 13th century onward, replacing the older lighter-armed Irish kerns with Hebridean professionals in chain-mail wielding the great two-handed sparth axe.

What is the Sweeney motto?

The motto of the Sweeney family is "Buaidh no bas", which translates as "Victory or death". Family mottoes were registered with the chief of the name and carried on the heraldic arms and battle-banners.

What does "Buaidh no bas" mean in English?

"Buaidh no bas" is the motto of the Sweeney family. In English it means "Victory or death". The phrase is typically rendered in Latin, though some Highland families carry their motto in Gaelic and some Norman lines in Old French.

Who is the most famous Sweeney?

The best-known bearer of the Sweeney name is Eoghan Óg Mac Suibhne na dTuath (fl. c.1600), gallowglass chief at the Battle of Kinsale. Other prominent figures of the family include John J. Sweeney (1934–2021), president of the AFL-CIO 1995–2009 and John Sweeney (b. 1957), BBC investigative journalist (Panorama, Newsnight).

Who are some famous Sweeneys?

Notable bearers of the Sweeney name include Eoghan Óg Mac Suibhne na dTuath (fl. c.1600), gallowglass chief at the Battle of Kinsale, John J. Sweeney (1934–2021), president of the AFL-CIO 1995–2009 and John Sweeney (b. 1957), BBC investigative journalist (Panorama, Newsnight). Each is profiled on the family page, with cross-links to the geography, stories, and historical events tied to their life.

Is McSweeney the same family as Sweeney?

Yes. McSweeney is a historical spelling variant of the Sweeney 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 Suibhne the same family as Sweeney?

Yes. Mac Suibhne is a historical spelling variant of the Sweeney 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 Sweeney surname found today?

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

The Clan Rising page for the Sweeney family covers the meaning of the surname, the historical geography of the name, the family motto, famous bearers of the name 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 Sweeney family today?

The seat for the head of the Sweeney 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