OSM tag alt_name=Kythera matches Kythera in these Wikidata fields:
Former populated places in Greece | boundary=administrative, landuse=residential, place, admin_level |
Populated places in ancient Ionian Islands | place=islet, place=island, landuse=residential, boundary=administrative, place, admin_level |
Populated places in ancient Laconia | boundary=administrative, landuse=residential, place, admin_level |