This database is an index to one of Ireland's premier genealogical resources, Griffith's Valuation. It references more than one million individuals who owned property in Ireland between 1848 and 1864. Since no Irish census of the nineteenth century has survived, Griffith's Valuation is a record of extreme importance. It is, essentially, the only detailed guide to where in Ireland people lived during the mid-nineteenth century and what property they possessed. In effect, Griffith's Valuation can be used as a census substitute for the years before, during, and after the Great Famine.

Few other records can be used to identify an Irish ancestor's exact place of origin, and only Griffith's Valuation links an individual to a specific townland and civil parish. This information is very beneficial since identifying an ancestor's townland and civil parish is the first step in Irish genealogical research.

Listings Include:
- The individual's name.
- The county and parish where they resided at the time of the valuation.
- Some records contain additional information about an individual's occupation, religion, or relative's names.