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