The 1852 Act that (retrospectively) provided the legal underpinning for Richard Griffith’s great survey also envisaged annual revisions. It was a live tax record, after all, and needed to reflect changes in occupier, size of holding, name of lessor – anything that might affect the valuation and the tax payable. Some of Griffith’s local army of valuators must have remained in situ, supplying notice of changes to the central Office in Ely Place, Dublin.
The system in Dublin used a handwritten copy of the valuations, with amendments written over the original entry. Coloured pencils were employed to distinguish the year of the changes. (Unfortunately the microfilm copies made by the LDS Family History Library are in black and white.)
After a decade or so, the books would become increasingly difficult to read, so a fresh copy had to be made. The whole process then continued until that book in turn was cancelled and recopied.
Despite the original plans, full annual revisions were never a realistic prospect. The system eventually settled down to a natural rhythm, with a single revision (or “cancelled”) book covering fifteen or twenty years. For areas in the Republic, the revision process went on right up to the 1980s, when the local property tax was abolished, producing anything up to twelve separate books for a single area. In Northern Ireland the system changed in the 1930s and the most recent revisions are almost all for the 1920s.
The usefulness of the records is obvious: they provide a continual time-lapse record of every piece of property listed by Griffith, unbroken over the following century-and-a-half. Circumstantial evidence of death, emigration, money problems, family disputes – the revision books can contain them all.
Most importantly, the massive shift in land ownership to small tenant farmers that took place around the start of the twentieth century, and the fierce land hunger that drove it, means that there is almost certainly a family relationship between those who own the land now and those recorded in the revision books then. In other words, the books can provide excellent evidence of living relatives.
The books are available for areas in the Republic at the Valuation Office in the Irish Life Centre, Lower Abbey Street, Dublin. The VO is currently scanning the full collection with a view to making it available online. For the moment, the scans are only available onsite in the public office. Areas covered are Cos Cork, Donegal, Dublin, Galway, Kerry, Limerick, Mayo, Meath, Monaghan, Offaly, Roscommon. Sligo and Tipperary.
The Revision Books for Northern Ireland are in PRONI. An excellent PRONI sub-site allows online research by placename on the full set, with links to high-quality scans of the originals. Even for people without Ulster ancestor, the sub-site gives a great sense of just how useful these wonderful records can be.