Castlereagh () is a

barony Barony may refer to: * Barony, the peerage, office of, or territory held by a baron * Barony, the title and land held in fealty by a feudal baron * Barony (county division), a type of administrative or geographical division in parts of the British ...

County Roscommon County Roscommon () is a Counties of Ireland, county in Republic of Ireland, Ireland. It is part of the province of Connacht and the Northern and Western Region. It is the List of Irish counties by area, 11th largest Irish county by area and Li ...

, Ireland. It is named after the town of

Castlerea Castlerea ( ; ) is a town in County Roscommon, Ireland. It is located in the west of the county and had a population of 2,348 at the 2022 census. Roughly translated from Irish, Castlerea is generally thought to mean 'brindled castle' (''Caisl ...

within the barony. Its area in 1891 was . It contains five

civil parish In England, a civil parish is a type of administrative parish used for local government. It is a territorial designation which is the lowest tier of local government. Civil parishes can trace their origin to the ancient system of parishes, w ...

es: Ballintober, Baslick, Kilkeevin, Kilcorkey, and

Kiltullagh Kiltullagh () is a village and civil parish in County Galway, Ireland. Located on the R348 regional road, the M6 motorway passes nearby. As of 2011, the townlands of Kiltullagh South and Kiltullagh North, in Kiltullagh civil parish, had a combin ...

; including the towns of Ballinlough, Bellanagare,

, and

Cloonfad Cloonfad () is a village in County Roscommon, Ireland, at the crossroads of the N83 National secondary road and the R327 regional road, about 10 km from the town of Ballyhaunis in County Mayo. A public walkway takes walkers to neighbouri ...

History

Castlereagh barony was anciently part of the territory of the

Síol Maelruain Síol Maelruain was a territory located in north County Roscommon due west, from what is now Castlerea. Its lake, Lough O'Flynn, is the source of the River Suck and is located at the foot of Slieve O'Flynn mountain. The lordship was centered on t ...

, ruled by the

Flynn Flynn is an Irish surname or first name, an anglicised form of the Irish Ó Floinn or possibly Mac Floinn, meaning "descendant or son of Flann" (a byname meaning "reddish (complexion)" or "ruddy"). The name is more commonly used as a surname t ...

(Ó Floinn) family, whose name survive in the large lake in the barony,

Lough O'Flynn Lough O'Flynn () is a freshwater lake in the west of Ireland. It is located in west County Roscommon and is the source of the River Suck. Name The name is from the Gaelic Irish tribe of the Ó Floinn, who ruled the region known as Síol Maelru ...

. From the 18th century onward the Wills and Sandford families were the main landlords (see:

Baron Mount Sandford Baron Mount Sandford, of Castlerea in the County of Roscommon, was a title in the Peerage of Ireland. It was created on 31 July 1800 for Henry Sandford, with remainder in default of male issue of his own, to his brothers William Sandford and Georg ...

List of settlements

Below is a list of settlements in Castlereagh barony: * Ballinlough * Ballintober * Bellanagare * Castleplunket *

References

Baronies of County Roscommon {{Roscommon-geo-stub