The purpose of the project was to provide machine-readable economic and social history statistics relating to the whole of Ireland for the period 1821-1971. Further information about the project is available on the QUB Centre for Data Digitisation and Analysis website. The main tables are: Acreages under different crops grouped by baronies and holding size (1852-1871). Acreages under different crops grouped by counties (1881-1911). Acreages under different crops grouped by electoral divisions and holding size, also including the area, valuation and population of the electoral division (1847-1851). Acreages under different crops grouped by poor law unions and holding size (1852-1871). Acreages under different crops grouped by poor law unions (1881-1911). Livestock numbers grouped by baronies and holding size (1847-1871). Livestock numbers grouped by counties and holding size (1881-1911). Livestock numbers grouped by poor law unions and holding size (1851-1871, 1881, 1891, 1901 and 1911). Please note: this study does not include information on named individuals and would therefore not be useful for personal family history research.