These Irish name elements are associated with this record in the Logainm glossary.
An element’s translation is a clue, rather than a complete explanation of the name. Its form and meaning depend on local history and the full Irish name.
Recorded forms
An Caisleán Nua· Irish · main form · validated name
Greencastle· English · main form
Place & story
Northburgh and its conservation
Northburgh Castle was built in 1305 by Richard Óg de Burgo, earl of Ulster. Its position at Greencastle placed a substantial Anglo-Norman fortress on the Inishowen shore. The modern conservation group, established in 2021, secured support for a conservation plan and then for documentation needed to commission emergency repairs. Its account makes the surviving structure part of an ongoing community project. The castle's age and scale are reasons for careful conservation, while the ruin itself preserves evidence of the construction that once made this a major stronghold.[2][5]
A battery completed after the invasion threat
The coastal fort beside the medieval castle was begun during the Napoleonic wars. Its ovoid tower, lower battery, barracks and sunken magazine were designed to defend the approach to Derry through Lough Foyle. The National Inventory of Architectural Heritage records delays caused by the contractor's financial difficulties: guns were still not installed when Walter Scott visited in 1814. Completion around 1816 came after Napoleon's defeat at Waterloo. Later rearmament continued the fort's military role, and its garrison remained until 1890. The adjacent fortifications therefore belong to very different periods of warfare.[3]
People & connections
A museum assembled from local collections
Inishowen Maritime Museum grew from a Heritage Day display organised by local enthusiasts in 1990. The quantity of artefacts and photographs encouraged a permanent museum, and local fundraising helped purchase adjoining dwellings in Greencastle's old coastguard station. The museum's own account records a committee formed in 1994. Overlooking the harbour, its collections connect seafaring, fishing and shipwreck history with objects retained by the surrounding community. This origin is an important part of the institution's story: local knowledge and donated material helped establish a public record of maritime life.[4]
Both counts use the 2016 settlement boundary, allowing like-for-like comparison. CSO supplies the 2022 count on this older boundary for comparison only. The official 2022 Built Up Area has different boundaries.
View population figures
Greencastle — Census 2016 settlement footprint — census population
Greencastle, Donegal — Census town, CSO 2006 report
2002–2006: census town
530people · 2006
These are the historical areas published in the 2006 census report. Boundaries may differ between censuses and from modern settlements. Legal towns, environs and suburbs are shown separately; none has been combined into a modern settlement total.
View population figures
Greencastle, Donegal — Census town, CSO 2006 report — census population
Greencastle, Donegal — Census town, CSO 1996 report
1991–1996: census town
547people · 1996
These are the historical areas published in the 1996 census report. Boundaries may differ between censuses and from modern settlements. Legal towns, environs and suburbs are shown separately; none has been combined into a modern settlement total.
View population figures
Greencastle, Donegal — Census town, CSO 1996 report — census population
Greencastle, Donegal — Census town, CSO 1986 report
1981–1986: census town
584people · 1986
Figures cover the historical town area printed in the 1986 report. Boundaries may have changed between censuses. Legal town, environs and suburb totals remain separate and differ from modern settlement boundaries.
View population figures
Greencastle, Donegal — Census town, CSO 1986 report — census population
These figures use different area definitions. Read the boundary note before comparing them.
Greencastle, Donegal
Published census settlement populations
831people · 2016
Settlement boundaries changed during this period. Differences may reflect boundary changes as well as population change. Where a 2011 legal-town-and-environs count is shown, it has not been recalculated onto the 2016 settlement boundary.
St Finian's Church of Ireland, Greencastle, County Donegal illustration: based on a St Finian's Church of Ireland, Greencastle by Kenneth Allen. AI-assisted watercolour and ink adaptation; cream paper margins added, incidental clutter omitted and fine details simplified. Licence: CC BY-SA 2.0.
placenames