OSM tag name=St Mary's matches St Mary's Church in these Wikidata fields:
| Church of England church buildings in Hertfordshire | man_made=tower, disused:amenity=place_of_worship, denomination=anglican, building=church, amenity=place_of_worship |
| Former collegiate churches in England | man_made=tower, disused:amenity=place_of_worship, building=church, amenity=place_of_worship |
| Grade I listed churches in Hertfordshire | man_made=tower, disused:amenity=place_of_worship, building=church, amenity=place_of_worship |
| Tourist attractions in Hertfordshire | tourism=attraction, tourism=museum |