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Abstract copyright UK Data Service and data collection copyright owner. This research project aimed to fill a major lacuna militating against the effective exploitation of many post-medieval to mid-Victorian historical sources collected by local administrative areas: the lack of information on the boundaries of those administrative areas, the so-called 'historic' or 'ancient' parishes of England and Wales. It is known that these districts came into being during the Middle Ages, that the map of these ecclesiastical parishes was essentially complete by the fifteenth century, that these ecclesiastical boundaries were adopted during the early modern period for secular and judicial purposes, and that boundaries remained essentially unchanged until a number of reforms from the mid-nineteenth century onwards reorganised the local administrative geography of the country. The project aimed to reconstruct those boundaries as they were before the post-nineteenth century changes.

This dataset is based on material published online at https://www.historyofparliamentonline.org/ by the History of Parliament Trust.

R code and research dataset of medieval coins recorded by the Portable Antiquities Scheme in England and Wales (https://finds.org.uk/) used in the article:

Oksanen, Eljas and Brookes, Stuart (2025). 'The afterlife of Roman roads in England: insights from the fifteenth-century Gough Map of Great Britain', Journal of Archaeological Science.
https://doi.org/10.1016/j.jas.2025.106227

The coin finds data dump was obtained by the PAS website (https://finds.org.uk/) on 28.03.2025 under CC-BY licence and was filtered to contain only medieval coin findspots that have coordinate values. The R Code for analysis is included and was developed by Eljas Oksanen.