This data collection contains data primarily from both the 1841 and 1851 Census of Ireland used in Fernihough and Ó Gráda (2022). Also contained, where available, are population counts from the 1821 and 1831 censuses. The data collection also includes an amended version of the Civil Parish Shapefile from townlands.ie (OpenStreetMap Ireland, 2020). Both data sources were adjusted to ensure concordance. The towlands.ie data is open data is open data, licensed under the Open Data Commons Open Database License (ODbL). Please contact Alan Fernihough for further details or queries. The “shapefile” files are the GIS files one needs to load the spatial boundaries. The census data is included in the “data.csv” file and one must merge this to the shapefiles to work with these data. However, this is a simple process. The file “load and join.R” is an example of how this could be performed using the R statistical software package.

This dataset provides census estimates for the number of usual residents in Northern Ireland for the census years 1851 - 2021 by broad age bands, and by sex.

The census collected information on the usually resident population of Northern Ireland on census day (21 March 2021). Initial contact letters or questionnaire packs were delivered to every household and communal establishment, and residents were asked to complete online or return the questionnaire with information as correct on census day. Special arrangements were made to enumerate special groups such as students, members of the Travellers Community, HM Forces personnel etc. The Census Coverage Survey (an independent doorstep survey) followed between 12 May and 29 June 2021 and was used to adjust the census counts for under-enumeration.

This dataset provides census estimates for the number of usual residents living in households in Northern Ireland for the census years 1851 - 2021. It also includes an estimate of the number of households and average household size.

The census collected information on the usually resident population of Northern Ireland on census day (21 March 2021). Initial contact letters or questionnaire packs were delivered to every household and communal establishment, and residents were asked to complete online or return the questionnaire with information as correct on census day. Special arrangements were made to enumerate special groups such as students, members of the Travellers Community, HM Forces personnel etc. The Census Coverage Survey (an independent doorstep survey) followed between 12 May and 29 June 2021 and was used to adjust the census counts for under-enumeration.

The quality assurance report can be found here

The dataset provides detailed, standardised records of prisoners, including demographic, physical, and judicial information such as age, height, offence, birthplace, residence, occupation, religion, and literacy.

The dataset offers a comprehensive resource for studying social, economic, demographic, and anthropometric history of Ireland under British rule. Prisoners' names are anonymised to comply with data-sharing agreements. Recidivists are only included in this dataset the first time they are entered into the prison register.

Year of conviction ranges from 1858 to 1910, and the year of birth is from 1840 to 1859. The average age of the prison population is 34, and ages range from 16 to 70.

Data are described in more detail in E. McLaughlin, C. L. Colvin and M. Blum, 'Anthropometric History: Revisiting What’s in it for Ireland', Irish Economic and Social History (2021).

Occupations are classified into five categories using the Armstrong scale: W. A. Armstrong, ‘The use of information about occupation, part I: a basis for social stratification’, in E. A. Wrigley (ed.), Nineteenth-century society: essays in the use of quantitative methods for the study of social data (Cambridge, 1972).

Famine-era mortality is appended to this dataset, denoting excess mortality in a prisoner's county of birth during the Great Irish Famine. This is calculated by comparing the 1841 and 1851 censuses, as calculated by Joel Mokyr, Why Ireland starved (2nd ed., London, 1985).

This project presents a hand-collected dataset of over 18,620 individuals incarcerated in Kilmainham Gaol (1837–1910) or Clonmel Gaol (1848–1929), derived from surviving General Prison Registers for these two prisons held at the National Archives of Ireland in Dublin (NAI/Pris1/3 and NAI/Pris1/33).