The Geography of Saints

Most British churches are named for a saint, and the choice was rarely random. I mapped the dedications of churches across Great Britain from OpenStreetMap to see where each saint's following lies.

Tristan Hotham · Researcher of campaigns and platforms · 2026

Three nations, three saints

Mary leads in England and Wales, as she does across Latin Christendom. Below her the nations part ways. In England, All Saints, Peter, Andrew and Michael follow. In Wales, David is second, ahead of every apostle. In Scotland, Andrew comes first. National saints show up in the dedications, not just on flags. Red bars mark saints who belong to that nation.

Find a saint

Every dedication can be mapped. Choose a saint to see their churches and the counties where they are commonest relative to all dedicated churches there. Northern saints such as Cuthbert, Aidan, Oswald and Wilfrid trace the old kingdom of Northumbria. Chad belongs to Mercia, Botolph and Edmund to East Anglia, and Petroc to the far south-west.

Saints found nowhere else

The clearest regional pattern is one of local saints. These are dedications that occur in one county and nowhere else in Britain. Cornwall stands far ahead with such saints, most of them obscure holy men and women of the fifth and sixth centuries. They include Austell, Breaca, Buryan, Endellion, Euny and Gwinear, and many are remembered in the parish names. The Welsh counties come next. Their llan churches carry the names of their founders.

County	Saints found only here	Some of them

Counts depend on how churches are named in OpenStreetMap, and a few variant spellings of one saint may count twice.

Each county's distinctive saint

Mary is the top dedication in almost every county. A fairer question is which saint is most over-represented in each county compared with Britain as a whole, among saints with 15 or more churches. The answers sketch a map of early medieval Britain.

Most distinctive saint by county

"×" is how many times more common the dedication is than the national rate. Counties need four or more churches of that saint. Deeper blue means more distinctive. Click a county to map its saint.

County	Saint	×

Method

Churches are OpenStreetMap features tagged amenity=place_of_worship and religion=christian in Great Britain, downloaded through the Overpass API in October 2026.
The dedication is read from the dedication tag where present, and otherwise from the name ("St Mary's Church", "Eglwys Sant Pedr", "All Saints"). Welsh forms (Sant, Santes, Dewi, Mair, Mihangel) are translated. Joint dedications such as Peter and Paul are kept together.
The analysis keeps churches of the established churches (Church of England, Church in Wales, Church of Scotland, Scottish Episcopal) and churches with no denomination tagged. These are mostly old parish churches. Roman Catholic and nonconformist churches, mostly built in the nineteenth and twentieth centuries, are left out. So are churches without a recognisable dedication.
Counties are ceremonial counties (England), preserved counties (Wales) and council areas (Scotland). Distinctiveness is the location quotient: the saint's share of a county's dedicated churches divided by its share in Britain.

Many Scottish parish churches are named after their parish rather than a saint, so Scotland is thinly covered. Victorian churches added many new dedications (Christ Church, Emmanuel, Holy Trinity), so modern towns look more "national" than old villages.