OSM tag name=Ynys Gifftan matches Ynys Gifftan in these Wikidata fields:
Islands of Gwynedd | place=islet, place=island, boundary=administrative, admin_level |
Islands of Snowdonia | place=islet, place=island, boundary=administrative, admin_level |
Tidal islands of Wales | place=islet, place=island, boundary=administrative, admin_level |