Pubblebrien () is a historical barony in northern County Limerick, Ireland.
Baronies were mainly cadastral rather than administrative units. They acquired modest local taxation and spending functions in the 19th century before being superseded by the Local Government (Ireland) Act 1898.
Carrigogunnell was the ancient centre of the area. It was ruled by the àCiarmhaic (Kerwicks), a cantred of the Eóganachta, until it fell to the Mac UàBhrian (Mac Brien), a branch of the O'Brien dynasty, hence the name Pubblebrien ("Brian's people," referring to Brian Boru). The MacSheehy and O'Hallinans had a seat at Ballyallinan Castle; the MacSheehys (Mac SÃÂthigh) were gallowglasses (soldier-clients from Scotland) who arrived in the Ireland in the 14th century and were in Connacht from the 15th century as bodyguards to the Fitzgerald Earls of Desmond. The MacArthur and O'Scanlan clans also held land in Pubblebrien.
The Cromwellian adventurer William Peacock received in Pubblebrien after the Cromwellian conquest of Ireland.
MáirtÃÂn àMurchú noted the rapid decline in Irish speakers in Pubblebrien, from 100% in those born 1791âÂÂ1801 to 3% in those born 1851âÂÂ61 (i.e. after the Famine).
In 2002 a local history, Pubblebrien Journal, was published by the Pubblebrien Historical Society.
Pubblebrien is in the north-centre of the county, east of the River Maigue, west of Limerick city and south of the Shannon.
Settlements within the historical barony of Pubblebrien include: