I’ve recently returned from a research visit to Ruthin archives to look at the Denbighshire parish registers. The purpose of the visit was to trawl through every one of the hundreds of parish register transcriptions, looking for medical practitioners. With two bookcases full of volumes, each containing many individual registers, this was always going to be a long task. The registers for the town of Wrexham alone took two days, and monotony soon sets in when faced with page after page after page of names and bare information.

Parish registers are commonly the domain of genealogists and family historians, perhaps researching their own family history. Through the popularity of television shows like Who Do You Think You Are researching your own family tree has never been so popular, aided by the growing availability of source material online. Historians too are making use of parish registers. In aggregate they can reveal…