The list of standardised Welsh place-names, for places in Gwynedd, is a list compiled by the Welsh Language Commissioner to recommend the standardisation of the spelling of Welsh place-names, particularly in the Welsh language and when multiple forms are used, although some place-names in English were also recommended to be matched with the Welsh. The list contains 317 entries, as of November 2023.
The list is based on recommendations provided by the Place-names Standardisation Panel, convened by the Commissioner, for expert advice on the standardisation of Welsh place-names. The panel bases their decisions on a set of guidelines (currently dating to June 2023), specific to Welsh settlement names (such as those of villages, towns, and cities) and topographic features (such as lakes, mountains and rivers). The panel does not cover house or building names, although similar principles could be applied to them or to names for new developments (for which the Commissioner offers their own advice to local authorities and housing developers).[1] The panel may also have used additional guidelines.[2]
The list was first published in 2018,[3] and took years to put together.[4] Upon creation, these lists were published under the Open Government Licence 3.0.[5] [6]
The Welsh name change of Barmouth, from Abermaw / Y Bermo to Abermo was criticised by a local historian in 2018,[7] in the November 2023 list, it seems to have been replaced with Y Bermo in Welsh.
| Recommended standardised names | Other name/spelling not recommended | Type | Grid reference | ||
|---|---|---|---|---|---|
| Welsh | English | ||||
| Aberangell | Aberangell | Settlement | SH8410 | ||
| Abercywarch | Abercywarch | Aber-Cywarch | Settlement | SH8615 | |
| Aberdaron | Aberdaron | Settlement | SH1726 | ||
| Aberdesach | Aberdesach | Settlement | SH4251 | ||
| Aberdyfi | Aberdyfi | Settlement | SN6196 | ||
| Aber-erch | Aber-erch | Abererch | Settlement | SH3936 | |
| Abergeirw | Abergeirw | Settlement | SH7629 | ||
| Aberglaslyn | Aberglaslyn | Man-made feature | SH5946 | ||
| Abergwyngregyn | Abergwyngregyn | Settlement | SH6572 | ||
| Abergynolwyn | Abergynolwyn | Settlement | SH6706 | ||
| Aberllefenni | Aberllefenni | Settlement | SH7709 | ||
| Aber-pwll | Aber-pwll | Area | SH5368 | ||
| Abersoch | Abersoch | Settlement | SH3128 | ||
| Abertrinant | Abertrinant | Settlement | SH6405 | ||
| Afon-wen | Afon-wen | Afon Wen | Settlement | SH4437 | |
| Anelog | Anelog | Settlement | SH1527 | ||
| Arthog | Arthog | Settlement | SH6414 | ||
| Y Bala | Y Bala | Bala | Settlement | SH9236 | |
| Bangor | Bangor | Settlement | SH5771 | ||
| Bangor Uchaf | Upper Bangor | Settlement | SH5772 | ||
| Beddgelert | Beddgelert | Settlement | SH5948 | ||
| Bethania | Bethania | Settlement | SH7045 | ||
| Bethel | Bethel | Settlement | SH5265 | ||
| Bethel | Bethel | Settlement | SH9839 | ||
| Bethesda | Bethesda | Settlement | SH6266 | ||
| Bethesda Bach | Bethesda Bach | Settlement | SH4656 | ||
| Betws Garmon | Betws Garmon | Settlement | SH5357 | ||
| Blaen Nanmor | Blaen Nanmor | Area | SH6348 | ||
| Blaenau Ffestiniog | Blaenau Ffestiniog | Settlement | SH7045 | ||
| Boduan | Boduan | Settlement | SH3237 | ||
| Y Bont-ddu | Y Bont-ddu | Bontddu | Settlement | SH6618 | |
| Y Bontnewydd | Y Bontnewydd | Bontnewydd | Settlement | SH4859 | |
| Y Bontnewydd | Y Bontnewydd | Area | SH7720 | ||
| Borth-y-Gest | Borth-y-Gest | Settlement | SH5637 | ||
| Botwnnog | Botwnnog | Settlement | SH2631 | ||
| Braichmelyn | Braichmelyn | Area | SH6265 | ||
| Braichtalog | Braichtalog | Settlement | SH6067 | ||
| Brithdir | Brithdir | Area | SH7618 | ||
| Bronaber | Bronaber | Settlement | SH7131 | ||
| Bron-y-môr | Bron-y-môr | Area | SH5700 | ||
| Brynbwbach | Brynbwbach | Settlement | SH6236 | ||
| Bryncir | Bryncir | Brynkir | Settlement | SH4844 | |
| Bryncoedifor | Bryncoedifor | Settlement | SH7920 | ||
| Bryncroes | Bryncroes | Settlement | SH2231 | ||
| Bryn-crug | Bryn-crug | Bryncrug | Settlement | SH6003 | |
| Bryneglwys | Bryneglwys | Bryn Eglwys | Settlement | SH6066 | |
| Bryn-llwyd | Bryn-llwyd | Area | SH5670 | ||
| Bryn-mawr | Bryn-mawr | Area | SH4243 | ||
| Brynrefail | Brynrefail | Settlement | SH5562 | ||
| Bwlchderwin | Bwlchderwin | Settlement | SH4546 | ||
| Bwlchtocyn | Bwlchtocyn | Settlement | SH3126 | ||
| Bwlch-y-llyn | Bwlch-y-llyn | Settlement | SH5055 | ||
| Caeathro | Caeathro | Settlement | SH5061 | ||
| Cae-clyd | Cae-clyd | Cae Clyd | Settlement | SH7144 | |
| Caerdeon | Caerdeon | Area | SH6518 | ||
| Caerhun | Caerhun | Settlement | SH5769 | ||
| Caernarfon | Caernarfon | Settlement | SH4862 | ||
| Caletwr | Caletwr | Area | SH9734 | ||
| Camlan | Camlan | Area | SH8511 | ||
| Capel Uchaf | Capel Uchaf | Settlement | SH4349 | ||
| Carmel | Carmel | Settlement | SH4954 | ||
| Carreg-y-gath | Carreg-y-gath | Settlement | SH5865 | ||
| Cefnddwygraig | Cefnddwygraig | Area | SH9233 | ||
| Cefnddwysarn | Cefnddwysarn | Settlement | SH9638 | ||
| Ceidio | Ceidio | Man-made feature | SH2837 | ||
| Cennin | Cennin | Settlement | SH4644 | ||
| Ceunant | Ceunant | Area | SH5361 | ||
| Chwilog | Chwilog | Settlement | SH4338 | ||
| Cilan | Cilan | Settlement | SH2924 | ||
| Cilfodan | Cilfodan | Area | SH6266 | ||
| Cilgwyn | Cilgwyn | Area | SH4954 | ||
| Ciltalgarth | Ciltalgarth | Area | SH8840 | ||
| Clwt-y-bont | Clwt-y-bont | Settlement | SH5762 | ||
| Clynnog Fawr | Clynnog Fawr | Settlement | SH4149 | ||
| Coed-mawr | Coed-mawr | Settlement | SH5670 | ||
| Coed-y-parc | Coed-y-parc | Settlement | SH6166 | ||
| Coedystumgwern | Coedystumgwern | Settlement | SH5823 | ||
| Congl-y-wal | Congl-y-wal | Settlement | SH7044 | ||
| Corris | Corris | Settlement | SH7507 | ||
| Corris Uchaf | Corris Uchaf | Settlement | SH7408 | ||
| Cricieth | Cricieth | Criccieth | Settlement | SH5038 | |
| Croesor | Croesor | Settlement | SH6344 | ||
| Croes-y-waun | Croes-y-waun | Settlement | SH5259 | ||
| Cutiau | Cutiau | Settlement | SH6317 | ||
| Cwmcewydd | Cwmcewydd | Settlement | SH8713 | ||
| Cwm-y-glo | Cwm-y-glo | Settlement | SH5562 | ||
| Cwrt | Cwrt | Settlement | SH6800 | ||
| Cywarch | Cywarch | Area | SH8518 | ||
| Deiniolen | Deiniolen | Settlement | SH5763 | ||
| Dinas | Dinas | Settlement | SH2636 | ||
| Dinas | Dinas | Settlement | SH4858 | ||
| Dinas Dinlle | Dinas Dinlle | Settlement | SH4356 | ||
| Dinas Mawddwy | Dinas Mawddwy | Settlement | SH8514 | ||
| Dinorwig | Dinorwig | Settlement | SH5961 | ||
| Dolbenmaen | Dolbenmaen | Settlement | SH5043 | ||
| Dolgellau | Dolgellau | Settlement | SH7217 | ||
| Dôl-goch | Dôl-goch | Dolgoch | Settlement | SH6504 | |
| Dolhendre | Dolhendre | Area | SH8531 | ||
| Dôl-y-cae | Dôl-y-cae | Area | SH7211 | ||
| Dolydd | Dolydd | Settlement | SH4757 | ||
| Drws-y-coed | Drws-y-coed | Area | SH5453 | ||
| Dyffryn | Dyffryn | Settlement | SH5823 | ||
| Dyffryn Ardudwy | Dyffryn Ardudwy | Settlement | SH5823 | ||
| Edern | Edern | Settlement | SH2739 | ||
| Efailnewydd | Efailnewydd | Settlement | SH3535 | ||
| Eisingrug | Eisingrug | Settlement | SH6134 | ||
| Y Fach-wen | Y Fach-wen | Settlement | SH5761 | ||
| Fairbourne | Fairbourne | Settlement | SH6113 | ||
| Y Felinheli | Y Felinheli | Settlement | SH5267 | ||
| Felin-hen | Felin-hen | Felin Hen | Settlement | SH5868 | |
| Y Ffôr | Y Ffôr | Settlement | SH3938 | ||
| Y Friog | Y Friog | Friog | Settlement | SH6112 | |
| Y Fron | Y Fron | Settlement | SH5154 | ||
| Fron-goch | Fron-goch | Frongoch | Settlement | SH9039 | |
| Gallt-y-foel | Gallt-y-foel | Settlement | SH5862 | ||
| Y Ganllwyd | Y Ganllwyd | Ganllwyd | Settlement | SH7224 | |
| Garndolbenmaen | Garndolbenmaen | Settlement | SH4944 | ||
| Garnfadrun | Garnfadrun | Carn Fadryn | Settlement | SH2834 | |
| Garreg | Garreg | Settlement | SH6141 | ||
| Garth | Garth | Area | SH5873 | ||
| Gellilydan | Gellilydan | Settlement | SH6839 | ||
| Gerlan | Gerlan | Settlement | SH6366 | ||
| Glan Dwyfach | Glan Dwyfach | Area | SH4843 | ||
| Glanadda | Glanadda | Settlement | SH5770 | ||
| Glan-y-pwll | Glan-y-pwll | Settlement | SH6946 | ||
| Glanyrafon | Glanyrafon | Glan-yr-afon | Settlement | SJ0242 | |
| Glan-y-wern | Glan-y-wern | Settlement | SH6034 | ||
| Glasinfryn | Glasinfryn | Settlement | SH5868 | ||
| Glynllifon | Glynllifon | Man-made feature | SH4555 | ||
| Golan | Golan | Settlement | SH5242 | ||
| Groesffordd | Groesffordd | Settlement | SH2739 | ||
| Y Groeslon | Y Groeslon | Groeslon | Settlement | SH4755 | |
| Gwastadnant | Gwastadnant | Settlement | SH6157 | ||
| Gwastadros | Gwastadros | Area | SH8835 | ||
| Gwydir | Gwydir | Man-made feature | SH7961 | ||
| Gyrn Goch | Gyrn Goch | Topographical feature | SH4047 | ||
| Harlech | Harlech | Settlement | SH5831 | ||
| Hen-barc | Hen-barc | Area | SH6267 | ||
| Hirael | Hirael | Settlement | SH5872 | ||
| Islaw'r-dref | Islaw'r-dref | Area | SH6815 | ||
| Llan Ffestiniog | Llan Ffestiniog | Settlement | SH7041 | ||
| Llanaber | Llanaber | Settlement | SH6017 | ||
| Llanaelhaearn | Llanaelhaearn | Settlement | SH3844 | ||
| Llanarmon | Llanarmon | Settlement | SH4239 | ||
| Llanbedr | Llanbedr | Settlement | SH5826 | ||
| Llanbedrog | Llanbedrog | Settlement | SH3231 | ||
| Llanberis | Llanberis | Settlement | SH5760 | ||
| Llandanwg | Llandanwg | Settlement | SH5628 | ||
| Llanddeiniolen | Llanddeiniolen | Settlement | SH5466 | ||
| Llandderfel | Llandderfel | Settlement | SH9837 | ||
| Llandecwyn | Llandecwyn | Settlement | SH6337 | ||
| Llandwrog | Llandwrog | Settlement | SH4556 | ||
| Llandygái | Llandygái | Llandygai | Settlement | SH5970 | |
| Llanegryn | Llanegryn | Settlement | SH6005 | ||
| Llanelltud | Llanelltud | Llanelltyd | Settlement | SH7119 | |
| Llanenddwyn | Llanenddwyn | Settlement | SH5723 | ||
| Llanengan | Llanengan | Settlement | SH2926 | ||
| Llanfachreth | Llanfachreth | Settlement | SH7522 | ||
| Llanfaglan | Llanfaglan | Settlement | SH4760 | ||
| Llanfair | Llanfair | Settlement | SH5729 | ||
| Llanfihangel-y-Pennant | Llanfihangel-y-Pennant | Settlement | SH5244 | ||
| Llanfihangel-y-Pennant | Llanfihangel-y-Pennant | Settlement | SH6708 | ||
| Llanfor | Llanfor | Settlement | SH9336 | ||
| Llanfrothen | Llanfrothen | Settlement | SH6241 | ||
| Llangelynnin | Llangelynnin | Settlement | SH5707 | ||
| Llangïan | Llangïan | Llangian | Settlement | SH2928 | |
| Llangwnnadl | Llangwnnadl | Settlement | SH2032 | ||
| Llangybi | Llangybi | Settlement | SH4241 | ||
| Llangywer | Llangywer | Llangower | Settlement | SH9032 | |
| Llaniestyn | Llaniestyn | Settlement | SH2733 | ||
| Llanllechid | Llanllechid | Settlement | SH6268 | ||
| Llanllyfni | Llanllyfni | Settlement | SH4751 | ||
| Llannerchfydaf | Llannerchfydaf | Area | SH9017 | ||
| Llannor | Llannor | Settlement | SH3537 | ||
| Llanrug | Llanrug | Settlement | SH5363 | ||
| Llanuwchllyn | Llanuwchllyn | Settlement | SH8730 | ||
| Llanwnda | Llanwnda | Settlement | SH4758 | ||
| Llanycil | Llanycil | Settlement | SH9134 | ||
| Llanymawddwy | Llanymawddwy | Settlement | SH9019 | ||
| Llanystumdwy | Llanystumdwy | Settlement | SH4738 | ||
| Llecheiddior | Llecheiddior | Area | SH4743 | ||
| Llidiardau | Llidiardau | Area | SH8738 | ||
| Llidiart y Barwn | Llidiart y Barwn | Topographical feature | SH9012 | ||
| Llithfaen | Llithfaen | Settlement | SH3543 | ||
| Llwyndyrys | Llwyndyrys | Settlement | SH3741 | ||
| Llwyngwril | Llwyngwril | Settlement | SH5909 | ||
| Llwynhudol | Llwynhudol | Settlement | SH3836 | ||
| Llynpenmaen | Penmaen-pŵl | Settlement | SH6918 | ||
| Machroes | Machroes | Settlement | SH3126 | ||
| Maenofferen | Maenofferen | Area | SH7045 | ||
| Maentwrog | Maentwrog | Settlement | SH6640 | ||
| Maesgeirchen | Maesgeirchen | Settlement | SH5871 | ||
| Maesglasau | Maesglasau | Area | SH8114 | ||
| Mallwyd | Mallwyd | Settlement | SH8612 | ||
| Manod | Manod | Settlement | SH7044 | ||
| Minffordd | Minffordd | Settlement | SH5770 | ||
| Minffordd | Minffordd | Settlement | SH5938 | ||
| Minllyn | Minllyn | Settlement | SH8514 | ||
| Moelyci | Moelyci | Topographical feature | SH5966 | ||
| Morfa | Morfa | Settlement | SH1933 | ||
| Morfa Bychan | Morfa Bychan | Settlement | SH5437 | ||
| Morfa Nefyn | Morfa Nefyn | Settlement | SH2840 | ||
| Mynydd Llandygái | Mynydd Llandygái | Mynydd Llandygai | Settlement | SH6065 | |
| Mynytho | Mynytho | Settlement | SH3030 | ||
| Nanhoron | Nanhoron | Man-made feature | SH2831 | ||
| Nantgwynant | Nantgwynant | Nant Gwynant | Settlement | SH6351 | |
| Nantlle | Nantlle | Settlement | SH5053 | ||
| Nantmor | Nantmor | Settlement | SH6046 | ||
| Nantperis | Nantperis | Nant Peris | Settlement | SH6058 | |
| Nasareth | Nasareth | Settlement | SH4750 | ||
| Nebo | Nebo | Settlement | SH4750 | ||
| Nefyn | Nefyn | Settlement | SH3040 | ||
| Pandy | Pandy | Area | SH8729 | ||
| Pant-glas | Pant-glas | Pant Glas | Settlement | SH4747 | |
| Pantperthog | Pantperthog | Settlement | SH7404 | ||
| Parc | Parc | Area | SH8733 | ||
| Penantlliw | Penantlliw | Area | SH8132 | ||
| Penbodlas | Penbodlas | Settlement | SH2833 | ||
| Pencaenewydd | Pencaenewydd | Settlement | SH4041 | ||
| Pen-dre | Pen-dre | Area | SH5900 | ||
| Pengilfach | Pengilfach | Area | SH5661 | ||
| Pengroeslon | Pengroeslon | Settlement | SH2130 | ||
| Penhelyg | Penhelyg | Penhelig | Settlement | SN6296 | |
| Penisa'r-waun | Penisa'r-waun | Penisa'r Waun | Settlement | SH5563 | |
| Pen-lan | Pen-lan | Area | SH6139 | ||
| Penmorfa | Penmorfa | Settlement | SH5440 | ||
| Pennal | Pennal | Settlement | SH6900 | ||
| Pen-rallt | Pen-rallt | Settlement | SH3735 | ||
| Penrhos | Penrhos | Settlement | SH3433 | ||
| Penrhosgarnedd | Penrhosgarnedd | Settlement | SH5570 | ||
| Penrhyndeudraeth | Penrhyndeudraeth | Settlement | SH6139 | ||
| Pentir | Pentir | Settlement | SH5766 | ||
| Pentre Gwynfryn | Pentre Gwynfryn | Settlement | SH5927 | ||
| Pentrefelin | Pentrefelin | Settlement | SH5239 | ||
| Pentre-uchaf | Pentre-uchaf | Settlement | SH3539 | ||
| Pen-y-bryn | Pen-y-bryn | Pen y Bryn | Settlement | SH6919 | |
| Penychain | Penychain | Man-made feature | SH4335 | ||
| Pen-y-ffridd | Pen-y-ffridd | Area | SH5056 | ||
| Pen-y-graig | Pen-y-graig | Settlement | SH2033 | ||
| Pen-y-groes | Pen-y-groes | Penygroes | Settlement | SH4653 | |
| Pistyll | Pistyll | Settlement | SH3242 | ||
| Pontllyfni | Pontllyfni | Settlement | SH4352 | ||
| Pontrhythallt | Pontrhythallt | Settlement | SH5463 | ||
| Pont-rug | Pont-rug | Settlement | SH5163 | ||
| Porth Dinllaen | Porth Dinllaen | Porthdinllaen | Topographical feature | SH2841 | |
| Porth Penrhyn | Porth Penrhyn | Port Penrhyn | Settlement | SH5972 | |
| Porthmadog | Porthmadog | Settlement | SH5638 | ||
| Portmeirion | Portmeirion | Settlement | SH5837 | ||
| Pren-teg | Pren-teg | Prenteg | Settlement | SH5841 | |
| Pwllheli | Pwllheli | Settlement | SH3735 | ||
| Rachub | Rachub | Settlement | SH6268 | ||
| Y Rhiw | Y Rhiw | Settlement | SH2227 | ||
| Rhiwbryfdir | Rhiwbryfdir | Settlement | SH6946 | ||
| Rhiwlas | Rhiwlas | Settlement | SH5765 | ||
| Rhos Isaf | Rhos Isaf | Settlement | SH4857 | ||
| Rhos-ddu | Rhos-ddu | Settlement | SH2535 | ||
| Rhosdylluan | Rhosdylluan | Settlement | SH8628 | ||
| Rhos-fawr | Rhos-fawr | Settlement | SH3839 | ||
| Rhosgadfan | Rhosgadfan | Settlement | SH5057 | ||
| Rhosgyll | Rhosgyll | Area | SH4540 | ||
| Rhoshirwaun | Rhoshirwaun | Area | SH1929 | ||
| Rhos-lan | Rhos-lan | Area | SH4840 | ||
| Rhoslefain | Rhoslefain | Settlement | SH5705 | ||
| Rhostryfan | Rhostryfan | Settlement | SH4957 | ||
| Rhosygwaliau | Rhosygwaliau | Rhos-y-gwaliau | Settlement | SH9434 | |
| Rhos-y-llan | Rhos-y-llan | Settlement | SH2337 | ||
| Rhyd | Rhyd | Settlement | SH6341 | ||
| Rhyd-ddu | Rhyd-ddu | Settlement | SH5652 | ||
| Rhydlios | Rhydlios | Area | SH1830 | ||
| Rhyduchaf | Rhyduchaf | Rhyd-uchaf | Settlement | SH9037 | |
| Rhydyclafdy | Rhydyclafdy | Settlement | SH3234 | ||
| Rhydygwystl | Rhydygwystl | Settlement | SH4039 | ||
| Rhyd-y-main | Rhyd-y-main | Area | SH8022 | ||
| Rhydyronnen | Rhydyronnen | Rhyd-yr-onnen | Settlement | SH6102 | |
| Rhyd-y-sarn | Rhyd-y-sarn | Rhyd-y-Sarn | Settlement | SH6942 | |
| Sarn Mellteyrn | Sarn Mellteyrn | Sarn Meyllteyrn | Settlement | SH2332 | |
| Sarnau | Sarnau | Settlement | SH9739 | ||
| Sarn-bach | Sarn-bach | Settlement | SH3026 | ||
| Saron | Saron | Settlement | SH4658 | ||
| Seion | Seion | Settlement | SH5467 | ||
| Sling | Sling | Settlement | SH6067 | ||
| Soar | Soar | Settlement | SH6135 | ||
| Tabor | Tabor | Settlement | SH7517 | ||
| Taimorfa | Taimorfa | Settlement | SH2826 | ||
| Talardd | Talardd | Settlement | SH8926 | ||
| Talsarnau | Talsarnau | Settlement | SH6135 | ||
| Talweunydd | Talweunydd | Settlement | SH6947 | ||
| Tal-y-bont | Tal-y-bont | Settlement | SH5921 | ||
| Tal-y-bont | Tal-y-bont | Talybont | Settlement | SH6070 | |
| Tal-y-llyn | Tal-y-llyn | Settlement | SH7109 | ||
| Tal-y-sarn | Tal-y-sarn | Talysarn | Settlement | SH4853 | |
| Tan-lan | Tan-lan | Settlement | SH6142 | ||
| Tanygrisiau | Tanygrisiau | Settlement | SH6845 | ||
| Tan-y-maes | Tan-y-maes | Area | SH5266 | ||
| Tonfanau | Tonfanau | Man-made feature | SH5603 | ||
| Traeth Mawr | Traeth Mawr | Area | SH5939 | ||
| Trawsfynydd | Trawsfynydd | Settlement | SH7035 | ||
| Tre-faes | Tre-faes | Settlement | SH2532 | ||
| Trefeini | Trefeini | Area | SH7046 | ||
| Trefor | Trefor | Settlement | SH3746 | ||
| Tre-garth | Tre-garth | Tregarth | Settlement | SH6067 | |
| Tremadog | Tremadog | Settlement | SH5640 | ||
| Tre'r-llan | Tre'r-llan | Settlement | SH9737 | ||
| Tudweiliog | Tudweiliog | Settlement | SH2336 | ||
| Tŷ-nant | Tŷ-nant | Area | SH9026 | ||
| Tyn-y-maes | Tyn-y-maes | Settlement | SH6363 | ||
| Tywyn | Tywyn | Settlement | SH5800 | ||
| Uwchmynydd | Uwchmynydd | Area | SH1525 | ||
| Waun | Waun | Settlement | SH5564 | ||
| Waun Pentir | Waun Pentir | Settlement | SH5766 | ||
| Waunfawr | Waunfawr | Settlement | SH5359 | ||
| Waun-wen | Waun-wen | Settlement | SH5768 | ||
| Wenallt | Wenallt | Settlement | SH7317 | ||
| Yr Wyddfa | Snowdon | Topographical feature | SH6054 | ||
| Y Bermo | Barmouth | Settlement | SH6115 | ||
| Ynys | Ynys | Settlement | SH5935 | ||
| Ynys Enlli | Bardsey | Island | SH1221 | ||