Welsh Place Name List
Many historic sources, such as censuses, civil registration documents or wills may give different versions of a place name and be prepared for some strange spelling variations!
| Welsh Name | English Name | Historic County |
|---|---|---|
| Aberafan | Aberavon | Glamorgan |
| Aberconwy | Conway | Caernarfonshire |
| Abercynffig | Aberkenfig | Glamorgan |
| Aberdâr | Aberdare | Glamorgan |
| Aberdaugleddau | Milford Haven | Pembrokeshire |
| Aberdyfi | ||
| Abergwaun | Fishguard | Pembrokeshire |
| Aberhonddu | Brecon | Breconshire |
| Abermaw | Barmouth | Merionethshire |
| Aberpennar | Mountain Ash | Glamorgan |
| Aberriw | Berriew | Montgomershire |
| Abertawe | Swansea | Glamorgan |
| Aberteifi | Cardigan (town) | Cardiganshire |
| Arbeth | Narbeth | Pembrokeshire |
| Bae Colwyn | Colwyn Bay | Denbigshire |
| Bangor is y Coed | Bangor on Dee | Flintshire |
| Bimwares | Beaumaris | Anglesey |
| Blaenafon | Blaenavon | Monmouthshire |
| Brychdyn | Broughton | Flintshire |
| Brynbuga | Usk | Monmouthshire |
| Bwcle | Buckley | Flintshire |
| Caerdydd | Cardiff | Glamorgan |
| Caerfyrddin | Carmarthen | Carmartheshire |
| Caerffili | Caerphilly | Glamorgan |
| Caergybi | Holyhead | Anglesey |
| Caernarfon | Caernarfonshire | |
| Cas-gwent | Chepstow | Monmoutshire |
| Casnewydd | Newport | Monmouthshire |
| Castellnewydd Emlyn | Newcastle Emlyn | Carmarthenshire |
| Castell-nedd | Neath | Glamorga |
| Cegidfa | Guilsfield | Montgomershire |
| Cei Conna | Connah's Quay | Flinshire |
| Ceredigion or Sir Aberteifi | Cardiganshire | Cardiganshire |
| Chwitffordd | Whitford | Flintshire |
| Coed-duon | Blackwood | Monmouthshire |
| Coed Llai | Leeswood | Flintshire |
| Conwy | Caernarfomshire | |
| Croesgob | Bistre | Flinshire |
| Crucywel | Crickhowell | Breconshire |
| Cydweli | Kidwelly | Carmarthenshire |
| Dinbych | Denbigh | Denbighshire |
| Dinbych y Pysgod | Tenby | Pembrokshire |
| Diserth | Dyserth | Flintshire |
| Drenewydd | Newtown | Montgomeryshire |
| Erbistog | Erbistock | Denbighshire |
| Eryri | Snowdonia | - |
| Ffordun | Forden | Montgomertshire |
| Gallt Melyd | Meliden | Flintshire |
| Glyn Ebwy | Ebbw Vale | Monmouthshire |
| Helygain | Halkyn | Flintshire |
| Llai | Llay | Denbighshire |
| Llanandras | Presteigne | Radnorshire |
| Llanbedr Pont Steffan | Lampeter | Cardiganshire |
| Llandrindod | Llandrindod Wells | Radnorshire |
| Llansansiôr |
St. George |
Denbighshire |
| Llandysilio yn Iâl | Llantysilio | Denbigshire |
| Llanelwy | St. Asaph | Flintshire |
| Llanelli | Carmarthenshire | |
| Llaneurgain | Northop | Flintshire |
| Llanfair ym muallt | Builth Wells | Radnorshire |
| Llanfor | Merionethshire | |
| Llanilltud Fawr | Llantwit Major | Glamorgan |
| Llanisien | Llanishen | Glamorgan |
| Llannerch Banna | Penley | Flintshire |
| Llanymddyfri | Llandovery | Breconshire |
| Llwchwr | Glamorgan | |
| Maesglas | Greenfield | Flinshire |
| Maesyfed | New Radnor | Radnorshire |
| Marchwiail | Marchwiel | Denbighshire |
| Merthyr Tudful | Merthyr Tydfil | Glamorgan |
| Mwynglawdd | Minera | Denbighshire |
| Niwbwrch | Newborough | Anglesey |
| Owrtyn | Overton | Flinshire |
| Penarlâg | Hawarden | Flintshire |
| Penfro | Pembroke | Pembrokshire |
| Penstrywaid | Penstrowed | Montgomeryshire |
| Pentrehobyn | Pentrobin | Flintshire |
| Pen-y-bont (ar Ogwr) | Bridgend | Glamorgan |
| Ponciau | Denbighshire | |
| Porthaethwy | Menai Bridge | Anglesey |
| Porthmadog | Caernarfonshire | |
| Porth Tywyn | Burry Port | Carmarthenshire |
| Rhaeadr | Rhayader | Radnorshire |
| Rhaglan | Raglan | Monmouthshire |
| Rhiwabon | Ruabon (or |
Denbighshire |
| Rhuthun | Ruthin | Denbighshire |
| Rhydaman | Ammanford | Carmarthenshire |
| Rhymni | Rhymney | |
| Trefaldwyn | Montgomery | Mongomeryshire |
| Trefalun | Allington | Denbighshire |
| Treffynon | Holywell | Flinshire |
| Trefyclo | Knighton | Radnorshire |
| Trefynwy | Monmouth | Monmouthshire |
| Trefdraeth | Newport (Pembrokeshire) | Pembrokeshire |
| Treffynnon | Holywell | Flintshire |
| Trelawnyd | Flintshire | |
| Treorci | Treorchy | Glamorgan |
| Tyddewi | St. David's | Pembrokshire |
| Wrecsam | Wrexham | Denbighshire |
| Y Bers | Berse or Bersham | Denbighshire |
| Y Bontfaen | Cowbridge | Glamorgan |
| Y Drenewydd | Newtown | Montgomeryshire |
| Y Felinheli | Caernarfonshire | |
| Y Fenni | Abergavenny | Monmouthshire |
| Y Fflint | Flint | Flintshire |
| Y Gelli | Hay-on-Wye | Radnorshire |
| Yr Hôb | Hope | Flintshire |
| Y Trallwng | Welshpool | Montgomeryshire |
| Y Waun | Chirk | Denbighshire |
| Yr Orsedd | Rossett | Denbighshire |
| Yr Wyddfa | Snowdon | - |
| Yr Wyddgrug | Mold | Flintshire |
| Ynys Enlli | Bardsey Island | Caernarfonshire |
| Ynys Môn | Anglesey | Anglesey |