Castlereagh (,) is the name of a former

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 Down County Down () is one of the six counties of Northern Ireland, one of the nine counties of Ulster and one of the traditional thirty-two counties of Ireland. It covers an area of and has a population of 531,665. It borders County Antrim to the ...

, present-day Northern Ireland. It spanned the north-eastern area of the county bordering the baronies of: Ards to the east; Belfast to the north; Iveagh to the west south; and Dufferin,

Kinelarty Kinelarty () is a former Irish district and barony in County Down, Northern Ireland. It lies east of the centre of the county, and is bordered by five other baronies: Iveagh Upper, Lower Half to the west; Lecale Upper to the south and south-east; ...

, and Lecale to the south. By 1841 the barony was divided into

Castlereagh Lower Castlereagh Lower (named after the former barony of Castlereagh) is a historic barony in County Down, Northern Ireland. It was created by 1841 with the division of Castlereagh into two. The barony roughly matches the former Gaelic territory of '' ...

and

Castlereagh Upper Castlereagh Upper (named after the former barony of Castlereagh) is a historic barony in County Down, Northern Ireland. It was created by 1841 with the division of Castlereagh into two. It is bordered by eight other baronies: Castlereagh Lower a ...

References

County Down Baronies of County Down Former baronies of Ireland Early Modern Ireland {{Down-geo-stub