Enwau Lleoedd.
Aberhonddu, Aberhodni, Brecon.
Abermaw, Barmouth.
Aber Mynwy, Monmouth.
Abertawe, Swansea.
Aberteifi, Cardigan.
Aifft, Egypt.
Almaen, Germany.
Amwythig, Shrewsbury.
Baddon, Bath.
Bannau Brycheiniog, Brecknock Beacons.
Bêm, Bohemia.
Bristo, Bridstone.
Brosil, Brussels.
Broŵyr, Gower.
Brycheiniog, Breconshire.
Bryn Buga, Usk.
Bryneich, Bernicia.
Bryste, Bristol.
Bwrdios, Bordeaux.
Caer, Chester.
Caer Aranrod, Northern Crown.
Caercystenyn, Constantinople.
Caer Dulyn, Dublin.
Caerdydd, Caerdyf, Cardiff.
Caerefrog, York.
Caerfyrddin, Carmarthen.
Caergaint, Canterbury.
Caergrawnt, Cambridge.
Caer Gwydion, The Milky Way.
Caergybi, Holyhead.
Caer Lil, Carlisle.
Caerloew, Glosedr, Gloucester.
Caerludd, London.
Caer Lyr, Leicester.
Caerlleon ar Wysg, Caerleon.
Caersalem, Jerusalem.
Caerwrangon, Worcester.
Caerŵyr, Swansea.
Caint, Kent.
Casllwchwr, Loughor.
Casnewydd, Newport (Mon).
Castell Gwys, Wiston Castle.
Castell Moel, Green Castle.
Castell Nedd, Neath.
Ceintun, Kineton, Kington.
Ceredigion, Cardiganshire.
Cernyw, Cornwall.
Cilgwri, Wirral.
Clas ar Wy, Glasbury.
Coedllai, Leeswood.
Colunwy, Clun.
Conach, Connaught.
Croesoswallt, Oswestry.
Crughywel, Crickhowel.
Cwlen, Cologne.
Deifr, Deira.
Dinas y Garrai, Castor.
Dinbych, Denbigh.
Dinbych y Pysgod, Tenby.
Dulyn, Dublin.
Dyfrdwy, Dee.
Dyffryn Aur, Golden Vale.
Dyffryn Clwyd, Vale of Clwyd.
Dyffryn Tefeiddiog, Vale of Teme.
Efelfre, Velfrey.
Eglwys Wen, Whitchurch.
Eidal, Italy.
Enlli, Bardsey.
Ergin, Archenfield.
Eryri, the Snowdon Range.
Estyn, Holt.
Ewsam, Evesham.
Ffrainc, France.
Gien, Guienne.
Glyn Teyrnon, Llantarnam.
Grwyn, Gaveren.
Gwasgwyn, Gascony.
Gwebl, Weobly.
Gwyndud, Gwynedd, North Wales, north west Wales.
Gwynfryn, Whitney.
Gwyr, Gower.
Hafren, Severn.
Hendy Gwyn, Whitland.
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