Sweeney
also McSweeney, Mac Suibhne
Hebridean gallowglass — household cavalry of Tír Chonaill.
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Stake your name →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.
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?
Where does the Sweeney family come from?
Who are some famous Sweeneys?
Is McSweeney the same family as Sweeney?
Neighbouring clans
- O'DonnellTír Chonaill — Red Hugh's escape, and the Flight of 1607.
- GallagherOf Tír Chonaill and the household cavalry of the O'Donnell.
- DohertyLords of Inishowen — and the revolt that triggered the Plantation of Ulster.
- BoyleTwo unrelated families, one Anglicisation — Donegal kings and the Earls of Cork.