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Places
- Cefn, Newport / Casnewydd [City/Town/Village]
- Cefn, Powys
- Cefn, Powys
- Cefn, Powys
- Cefn, Herefordshire
- Cefn, Powys [Hill/Mountain]
- Cefn, Denbighshire / Sir Ddinbych
- Cefn, Powys
- Cefn, Monmouthshire / Sir Fynwy
- Cefn, Powys
- Cefn, Sir y Fflint - Flintshire, Wales, CH7
- Cefn, Powys [City/Town/Village]
- Cefn, Powys
- Cefn, Powys
- Cefn, Isle of Anglesey / Sir Ynys Mon
- Cefn, Ceredigion / Sir Ceredigion
- Cefn, Rhondda Cynon Taff / Rhondda Cynon Taf
- Cefn, Powys
- Cefn, Isle of Anglesey / Sir Ynys Mon
- Cefn, Powys
- Cefn, Conwy
- Cefn Alltwinau, Powys [Hill/Mountain]
- Cefn Arthen, Carmarthenshire / Sir Gaerfyrddin [Hill/Mountain]
- Cefn Bach, Caerphilly / Caerffili
- Cefn Bach, Powys
- Cefn Bach, Powys [Hill/Mountain]
- Cefn Bach, Carmarthenshire / Sir Gaerfyrddin [Hill/Mountain]
- Cefn Bach, Powys
- Cefn Barhedyn, Powys
- Cefn Berain, Conwy [City/Town/Village]
- Cefn Blaen-coel, Powys
- Cefn Blaencwmhenog, Powys
- Cefn Blaeneinon, Powys
- Cefn Blewog, Ceredigion / Sir Ceredigion
- Cefn Bod-Gadfan, Gwynedd
- Cefn Bola-maen, Powys
- Cefn Bran, Powys
- Cefn Branddu, Carmarthenshire / Sir Gaerfyrddin [Hill/Mountain]
- Cefn Brenig, Denbighshire / Sir Ddinbych
- Cefn brith, Powys [Antiquity (non Roman)]
- Cefn Brith, Powys
- Cefn Brith, Powys
- Cefn Briw, Powys
- Cefn Briw, Powys
- Cefn Brwynog, Ceredigion / Sir Ceredigion
- Cefn Brwynog, Ceredigion [Land Feature]
- Cefn Bryn, Swansea [Land Feature]
- Cefn Bugeilyn, Powys
- Cefn Bychan or Newbridge, Caerphilly / Caerffili [City/Town/Village]
- Cefn B�ch, Rhondda Cynon Taff / Rhondda Cynon Taf [Hill/Mountain]
- Cefn Côch, Powys - Powys, Wales, SY10
- Cefn Cadlan, Rhondda Cynon Taff / Rhondda Cynon Taf
- Cefn Cadle Fm, Swansea / Abertawe [Farm]
- Cefn Caer For, Isle of Anglesey / Sir Ynys Mon
- Cefn Caer-Euni, Gwynedd
- Cefn Cam, Gwynedd
- Cefn Canol, Wrexham / Wrecsam
- Cefn Canol, Powys [City/Town/Village]
- Cefn Cantref, Powys [Hill/Mountain]
- Cefn Cantref, Powys [Town]
- Cefn Car, Merthyr Tydfil / Merthyr Tudful
- Cefn Carfan, Bridgend / Pen-y-Bont ar Ogwr
- Cefn Carn Fadog, Carmarthenshire / Sir Gaerfyrddin [Hill/Mountain]
- Cefn Carn Fadog, Carmarthenshire [Land Feature]
- Cefn Carnedd (Fort), Powys [Antiquity (non Roman)]
- Cefn Castell, Conwy
- Cefn Cenarth, Powys
- Cefn Cenarth, Powys [Summit]
- Cefn Cerrigellgwm, Conwy [Hill/Mountain]
- Cefn Cil-Sanws, Merthyr Tydfil / Merthyr Tudful
- Cefn Clawdd, Powys [Summit]
- Cefn Clawdd, Gwynedd
- Cefn Clawdd, Powys [Hill/Mountain]
- Cefn Clytha, Monmouthshire / Sir Fynwy
- Cefn Cnwc, Ceredigion / Sir Ceredigion [Hill/Mountain]
- Cefn Cnwcheithinog, Ceredigion / Sir Ceredigion
- Cefn coch, Denbighshire / Sir Ddinbych
- Cefn Coch, Denbighshire [Town]
- Cefn Coch, Powys
- Cefn Coch, Powys [City/Town/Village]
- Cefn Coch, Gwynedd [Hill/Mountain]
- Cefn Coch, Ceredigion / Sir Ceredigion [Hill/Mountain]
- Cefn Coch, Shropshire [Forest/Wood]
- Cefn Coch, Blaenau Gwent [Hill/Mountain]
- Cefn Coch, Gwynedd [Land Feature]
- Cefn Coch, Isle of Anglesey / Sir Ynys Mon
- Cefn Coch, Carmarthenshire / Sir Gaerfyrddin
- Cefn Coch, Denbighshire / Sir Ddinbych
- Cefn Coch, Gwynedd
- Cefn Coch, Ceredigion / Sir Ceredigion [Hill/Mountain]
- Cefn Coch Fm, Monmouthshire / Sir Fynwy [Farm]
- Cefn Coch Fm, Monmouthshire / Sir Fynwy [Farm]
- Cefn Coch Fm, Ceredigion / Sir Ceredigion [Farm]
- Cefn Coed Viaduct, Merthyr Tydfil [Place of Interest]
- Cefn Coleshill, Flintshire / Sir y Fflint
- Cefn Colstyn, Cardiff / Caerdydd
- Cefn Craig, Powys
- Cefn Craig Amos, Rhondda Cynon Taff / Rhondda Cynon Taf
- Cefn Crew, Powys
- Cefn Crib, Torfaen / Tor-Faen
- Cefn Crib, Gwynedd
- Cefn Cribwr, Bridgend / Pen-y-Bont ar Ogwr [City/Town/Village]
- Cefn Cribwr, Bridgend [Town]
- Cefn Croes, Ceredigion / Sir Ceredigion
- Cefn Cross, Bridgend / Pen-y-Bont ar Ogwr [City/Town/Village]
- Cefn Cross, Bridgend [Town]
- Cefn Crug, Powys [Summit]
- Cefn Crug, Powys [Hill/Mountain]
- Cefn Crug, Carmarthenshire / Sir Gaerfyrddin [Hill/Mountain]
- Cefn Cul, Powys
- Cefn Cwm Llwch, Powys
- Cefn Cwm-coel, Powys
- Cefn Cwm-y-geifr, Wrexham / Wrecsam
- Cefn Cwmirfon, Powys
- Cefn Cyfarwydd, Conwy
- Cefn Cyff, Powys
- Cefn Cynllaith, Powys
- Cefn c�ch, Powys
- Cefn C�ch, Conwy
- Cefn C�ch, Conwy
- Cefn C�ch, Powys
- Cefn C�ch, Powys
- Cefn C�l, Powys
- Cefn Dderwen, Isle of Anglesey / Sir Ynys Mon
- Cefn Ddwy Ffrwd, Isle of Anglesey / Sir Ynys Mon
- Cefn Dolgelynen, Gwynedd [Hill/Mountain]
- Cefn Drum, Swansea / Abertawe
- Cefn Drum, Swansea [Summit]
- Cefn Du, Conwy [Hill/Mountain]
- Cefn Du, Isle of Anglesey / Sir Ynys Mon
- Cefn Du, Denbighshire / Sir Ddinbych [Hill/Mountain]
- Cefn Du, Powys [Hill/Mountain]
- Cefn Du, Denbighshire / Sir Ddinbych [Hill/Mountain]
- Cefn Du, Denbighshire [Land Feature]
- Cefn Du, Conwy [Hill/Mountain]
- Cefn Du, Conwy
- Cefn Du Isaf, Isle of Anglesey / Sir Ynys Mon
- Cefn du uchaf, Powys
- Cefn Edern, Gwynedd
- Cefn Edmwnt, Powys
- Cefn Eglwysilan, Rhondda Cynon Taff / Rhondda Cynon Taf [Hill/Mountain]
- Cefn Einion, Shropshire [City/Town/Village]
- Cefn Einion, Shropshire [Town]
- Cefn Eithin, Gwynedd
- Cefn Esgair-carnau, Powys
- Cefn Esgeronen, Ceredigion / Sir Ceredigion
- Cefn Fannog, Powys
- Cefn Fannog, Powys [Summit]
- Cefn Farm, Isle of Anglesey / Sir Ynys Mon [Farm]
- Cefn Ffordd, Neath Port Talbot / Castell-nedd Port Talbot
- Cefn Fforest, Caerphilly / Caerffili [City/Town/Village]
- Cefn Fm, Carmarthenshire / Sir Gaerfyrddin [Farm]
- Cefn Fm, Carmarthenshire / Sir Gaerfyrddin [Farm]
- Cefn Fm, Ceredigion / Sir Ceredigion [Farm]
- Cefn Fm, Wrexham / Wrecsam [Farm]
- Cefn Fm, Flintshire / Sir y Fflint [Farm]
- Cefn Fms, Herefordshire [Farm]
- Cefn Gafros Common, Powys
- Cefn Garlleg, Conwy
- Cefn Garw, Powys
- Cefn Garw Fm, Monmouthshire / Sir Fynwy [Farm]
- Cefn Gelligaer, Caerphilly / Caerffili [Hill/Mountain]
- Cefn Glancamddwr, Powys
- Cefn Glas, Bridgend / Pen-y-Bont ar Ogwr [City/Town/Village]
- Cefn Glas, Powys
- Cefn Glas, Rhondda Cynon Taff / Rhondda Cynon Taf
- Cefn Gledwen, Powys
- Cefn Gof, Powys
- Cefn Gola, Newport / Casnewydd
- Cefn Golau, Blaenau Gwent [City/Town/Village]
- Cefn Goleu, Powys
- Cefn Goleu Parc, Swansea / Abertawe
- Cefn Golog, Powys
- Cefn Gribin, Powys
- Cefn Grug, Neath Port Talbot / Castell-nedd Port Talbot
- Cefn Grug, Neath Port Talbot [Land Feature]
- Cefn Grugos, Powys
- Cefn Gunthly, Shropshire [Hill/Mountain]
- Cefn Gwenffrwd, Carmarthenshire [Land Feature]
- Cefn Gwenffrwd, Carmarthenshire / Sir Gaerfyrddin
- Cefn Gwrhyd, Neath Port Talbot / Castell-nedd Port Talbot [Hill/Mountain]
- Cefn Gwyn, Gwynedd
- Cefn Gwyn, Powys
- Cefn Gwyn, Powys
- Cefn Gwyn, Gwynedd [Hill/Mountain]
- Cefn Gwyn, Monmouthshire / Sir Fynwy
- Cefn Gwyngul, Rhondda Cynon Taff [Land Feature]
- Cefn Gwyngul, Rhondda Cynon Taff / Rhondda Cynon Taf
- Cefn Gwyntog, Powys
- Cefn Gwynus, Gwynedd
- Cefn Hafod wen, Powys
- Cefn Hedog, Gwynedd
- Cefn Hendre, Powys
- Cefn Hengoed, Caerphilly [Town]
- Cefn Hengoed, Caerphilly / Caerffili [City/Town/Village]
- Cefn Hepreas, Shropshire [Hill/Mountain]
- Cefn Hill, Herefordshire [Hill/Mountain]
- Cefn Hill, Herefordshire [Summit]
- Cefn Hill, Monmouthshire / Sir Fynwy [Hill/Mountain]
- Cefn Hir-fynydd, Wrexham / Wrecsam
- Cefn Hir-fynydd, Wrexham [Land Feature]
- Cefn Hirbrysg, Powys
- Cefn Hirgoed, Bridgend [Land Feature]
- Cefn Hirgoed, Bridgend / Pen-y-Bont ar Ogwr
- Cefn Ila Fm, Monmouthshire / Sir Fynwy [Farm]
- Cefn Isaf, Ceredigion / Sir Ceredigion
- Cefn Isaf, Conwy
- Cefn Isaf, Gwynedd
- Cefn Isaf, Powys
- Cefn Isaf, Powys
- Cefn Isaf, Ceredigion / Sir Ceredigion
- Cefn Leisiog, Gwynedd
- Cefn Llandybo, Powys [Hill/Mountain]
- Cefn Llanfair, Gwynedd
- Cefn Lle-oer, Powys
- Cefn Llech, Conwy
- Cefn Llech, Powys
- Cefn Llechid, Powys [Land Feature]
- Cefn Llechid, Powys [Hill/Mountain]
- Cefn Lletyhywel, Powys
- Cefn Llogell, Newport / Casnewydd
- Cefn Llwyd, Ceredigion / Sir Ceredigion [City/Town/Village]
- Cefn Llwyd, Conwy
- Cefn Llwyd, Powys
- Cefn Llwyd, Powys [Hill/Mountain]
- Cefn Llwydallt, Powys [Hill/Mountain]
- Cefn Llwydlo, Powys
- Cefn Llwyni, Powys
- Cefn Llys, The Vale of Glamorgan / Bro Morgannwg
- Cefn llys Uchaf, Powys
- Cefn Llys-gwr, Conwy
- Cefn Llystyn, Denbighshire / Sir Ddinbych
- Cefn Mably Woods, Caerphilly / Caerffili [Forest/Wood]
- Cefn Maen Amor, Conwy
- Cefn Maes, Carmarthenshire / Sir Gaerfyrddin
- Cefn Manmoel, Caerphilly / Caerffili [Hill/Mountain]
- Cefn Mawr, Conwy [Hill/Mountain]
- Cefn Mawr, Isle of Anglesey / Sir Ynys Mon
- Cefn Mawr, Powys [Hill/Mountain]
- Cefn Mawr, Powys [Land Feature]
- Cefn Mawr, Powys
- Cefn Mawr, Flintshire / Sir y Fflint [Hill/Mountain]
- Cefn Mawr, Flintshire / Sir y Fflint
- Cefn Mawr, Monmouthshire / Sir Fynwy [Hill/Mountain]
- Cefn Mawr Fm, Monmouthshire / Sir Fynwy [Farm]
- Cefn Meiriadog, Denbighshire / Sir Ddinbych [Hill/Mountain]
- Cefn Merthyr, Merthyr Tydfil / Merthyr Tudful
- Cefn Merthyr, Merthyr Tydfil [Land Feature]
- Cefn Merthyr Cynog, Powys [Hill/Mountain]
- Cefn Mine, Gwynedd
- Cefn Modfedd, Powys [Hill/Mountain]
- Cefn Moel, Powys [Hill/Mountain]
- Cefn Morfudd, Neath Port Talbot / Castell-nedd Port Talbot
- Cefn Morfudd, Neath Port Talbot [Land Feature]
- Cefn Nannerth, Powys
- Cefn Nant-y-gwair, Neath Port Talbot / Castell-nedd Port Talbot
- Cefn Nant-yr-iau, Powys
- Cefn Nantygeugarn, Rhondda Cynon Taff / Rhondda Cynon Taf
- Cefn Onn, Caerphilly / Caerffili
- Cefn Onnau, Powys
- Cefn Onneu, Powys [Land Feature]
- Cefn Padrig, Sea [Land Feature]
- Cefn Padrig, Carmarthenshire / Sir Gaerfyrddin
- Cefn Parc, Bridgend / Pen-y-Bont ar Ogwr
- Cefn Parc, Carmarthenshire / Sir Gaerfyrddin
- Cefn Park, Wrexham / Wrecsam
- Cefn Pawl, Powys
- Cefn Pen-lan, Powys
- Cefn Pen-y-bont, Powys [Hill/Mountain]
- Cefn Penagored, Denbighshire / Sir Ddinbych
- Cefn Pencoed, Gwynedd
- Cefn Pennar, Merthyr Tydfil / Merthyr Tudful
- Cefn Pentre, Gwynedd
- Cefn Peraidd, Gwynedd
- Cefn Perfedd, Powys
- Cefn Perfedd, Powys
- Cefn Pool, Powys [Water Feature]
- Cefn Post, Conwy
- Cefn Pwll-coch, Powys
- Cefn Pyllau-duon, Blaenau Gwent
- Cefn Rhigos, Rhondda Cynon Taff / Rhondda Cynon Taf [City/Town/Village]
- Cefn Rhouniarth, Powys
- Cefn Rhudd, Powys
- Cefn Rhydoldog, Powys
- Cefn Rhyswg, Caerphilly / Caerffili
- Cefn Rofft, Denbighshire / Sir Ddinbych
- Cefn Sarnau, Powys
- Cefn Sidan Sands, Carmarthenshire [Land Feature]
- Cefn Sidan Sands, Carmarthenshire / Sir Gaerfyrddin
- Cefn Sychbant, Rhondda Cynon Taff / Rhondda Cynon Taf
- Cefn Tan-y-graig, Conwy [Hill/Mountain]
- Cefn Tarenni Cochion, Powys [Hill/Mountain]
- Cefn Tilla, Monmouthshire / Sir Fynwy
- Cefn Tre-ysbyty or Mynydd St John, Powys [Hill/Mountain]
- Cefn Trefor, Denbighshire / Sir Ddinbych [Hill/Mountain]
- Cefn Trum yr Hwch, Powys [Hill/Mountain]
- Cefn Trybeddgwilym, Powys
- Cefn Twrch, Powys [Hill/Mountain]
- Cefn Ty'n-y-graig, Powys
- Cefn Ucha, Shropshire
- Cefn Uchaf, Powys
- Cefn Uchaf, Powys
- Cefn Uchaf, Wrexham / Wrecsam
- Cefn Vaynor, Powys
- Cefn Viaduct, Wrexham [Place of Interest]
- Cefn Vron Hill, Shropshire [Hill/Mountain]
- Cefn Waun-lwyd, Powys [Hill/Mountain]
- Cefn Wylfre, Powys [Hill/Mountain]
- Cefn y blodwel, Shropshire
- Cefn y Brithdir, Caerphilly / Caerffili [Hill/Mountain]
- Cefn y Bryn, Carmarthenshire / Sir Gaerfyrddin [Hill/Mountain]
- Cefn y Capel, Conwy
- Cefn y Clawdd, Gwynedd
- Cefn y Coed, Powys [Hill/Mountain]
- Cefn y Cwne, Ceredigion [Summit]
- Cefn y Cylchau, Carmarthenshire / Sir Gaerfyrddin [Hill/Mountain]
- Cefn y Fan, Merthyr Tydfil / Merthyr Tudful
- Cefn y Galchan, Monmouthshire / Sir Fynwy
- Cefn y Rhondda, Rhondda Cynon Taff [Summit]
- Cefn y Rhondda, Rhondda Cynon Taff / Rhondda Cynon Taf
- Cefn y Truman, Carmarthenshire / Sir Gaerfyrddin
- Cefn Ydfa, Bridgend / Pen-y-Bont ar Ogwr
- Cefn Ynys-fawr, Merthyr Tydfil / Merthyr Tudful
- Cefn yr Arail, Blaenau Gwent [Land Feature]
- Cefn yr Arail, Blaenau Gwent
- Cefn yr Argoed, Neath Port Talbot / Castell-nedd Port Talbot
- Cefn yr Esgair, Ceredigion / Sir Ceredigion [Hill/Mountain]
- Cefn yr Henriw, Powys
- Cefn yr Ogof, Conwy [Hill/Mountain]
- Cefn yr Ystrad, Powys [Hill/Mountain]
- Cefn Ystrad-ffin, Carmarthenshire / Sir Gaerfyrddin [Hill/Mountain]
- Cefn-Aber-Tanat, Shropshire
- Cefn-bach, Conwy
- Cefn-bach, Powys
- Cefn-bach, Isle of Anglesey / Sir Ynys Mon
- Cefn-banadl, Ceredigion / Sir Ceredigion
- Cefn-bangor, Ceredigion / Sir Ceredigion
- Cefn-betingau, Swansea / Abertawe
- Cefn-bodig, Gwynedd
- Cefn-brith, Conwy [Town]
- Cefn-brith, Conwy [City/Town/Village]
- Cefn-bryn, Carmarthenshire / Sir Gaerfyrddin
- Cefn-bryn-brain, Carmarthenshire / Sir Gaerfyrddin [City/Town/Village]
- Cefn-bychan, Wrexham / Wrecsam [City/Town/Village]
- Cefn-bychan, Flintshire / Sir y Fflint
- Cefn-bychan, Swansea / Abertawe [City/Town/Village]
- Cefn-caer, Gwynedd
- Cefn-caer-ferch, Gwynedd
- Cefn-caer-Ferch, Gwynedd [Town]
- Cefn-Campstone, Monmouthshire / Sir Fynwy
- Cefn-carn, Gwynedd
- Cefn-ceirch, Denbighshire / Sir Ddinbych
- Cefn-Ceist Fm, Herefordshire [Farm]
- Cefn-cenfi, Carmarthenshire / Sir Gaerfyrddin
- Cefn-cerrig, Carmarthenshire / Sir Gaerfyrddin
- Cefn-Cestyll, Conwy
- Cefn-cilwg, Carmarthenshire / Sir Gaerfyrddin
- Cefn-coch, Powys [Summit]
- Cefn-coch, Gwynedd
- Cefn-coch, Powys
- Cefn-coch, Conwy [City/Town/Village]
- Cefn-coch, Powys [Town]
- Cefn-coch, Isle of Anglesey / Sir Ynys Mon
- Cefn-coed, Powys
- Cefn-coed, Ceredigion / Sir Ceredigion
- Cefn-coed-y-cymmer, Merthyr Tydfil [Town]
- Cefn-coed-y-cymmer, Merthyr Tydfil / Merthyr Tudful [City/Town/Village]
- Cefn-crib, Torfaen / Tor-Faen [City/Town/Village]
- Cefn-crin, Powys
- Cefn-crwth, Carmarthenshire / Sir Gaerfyrddin
- Cefn-cr�g, Powys
- Cefn-Cr�n, Powys
- Cefn-cwrt, Ceredigion / Sir Ceredigion
- Cefn-ddwygraig, Gwynedd
- Cefn-ddwysarn, Gwynedd [City/Town/Village]
- Cefn-ddwysarn, Gwynedd [Town]
- Cefn-dre-wern, Powys [Hill/Mountain]
- Cefn-drydwy, Conwy
- Cefn-du, Denbighshire / Sir Ddinbych
- Cefn-du, Gwynedd [Hill/Mountain]
- Cefn-du, Isle of Anglesey / Sir Ynys Mon
- Cefn-du, Powys
- Cefn-du Mawr, Isle of Anglesey / Sir Ynys Mon
- Cefn-dyrys, Powys
- Cefn-Eithin, Gwynedd
- Cefn-esgair, Powys
- Cefn-eurgain, Flintshire / Sir y Fflint [City/Town/Village]
- Cefn-fedw, Carmarthenshire / Sir Gaerfyrddin
- Cefn-fforest, Merthyr Tydfil / Merthyr Tudful
- Cefn-Fforest, Conwy
- Cefn-Gader, Powys
- Cefn-gallt-y-cwm, Gwynedd
- Cefn-glas, Conwy
- Cefn-glas, Gwynedd
- Cefn-glas, Gwynedd [Hill/Mountain]
- Cefn-glasfryn, Carmarthenshire / Sir Gaerfyrddin
- Cefn-gl�s, Merthyr Tydfil / Merthyr Tudful
- Cefn-gorwydd, Swansea / Abertawe
- Cefn-gorwydd, Powys [City/Town/Village]
- Cefn-gorwydd, Powys [Town]
- Cefn-Griolen, Denbighshire / Sir Ddinbych
- Cefn-Gwili, Carmarthenshire / Sir Gaerfyrddin
- Cefn-gwrych, Carmarthenshire / Sir Gaerfyrddin
- Cefn-gwyddfod, Powys
- Cefn-gwyn, Gwynedd
- Cefn-gwyn, Ceredigion / Sir Ceredigion
- Cefn-gwyn, Powys
- Cefn-gwyn, Gwynedd
- Cefn-gwyn, Conwy
- Cefn-gwyn, Powys [Town]
- Cefn-hafdref, Powys
- Cefn-hendre, Carmarthenshire / Sir Gaerfyrddin
- Cefn-hengoed, Swansea / Abertawe [City/Town/Village]
- Cefn-henllan, Monmouthshire / Sir Fynwy
- Cefn-henllan, Carmarthenshire / Sir Gaerfyrddin
- Cefn-hilin, Powys
- Cefn-hir, Powys
- Cefn-hir, Gwynedd
- Cefn-hir, Powys [Hill/Mountain]
- Cefn-hirwaun, Powys
- Cefn-isa, Gwynedd
- Cefn-Isa, Wrexham / Wrecsam
- Cefn-isaf, Carmarthenshire / Sir Gaerfyrddin
- Cefn-Isaf Fm, Neath Port Talbot / Castell-nedd Port Talbot [Farm]
- Cefn-llan, Powys
- Cefn-llwyd, Caerphilly / Caerffili
- Cefn-llwyd, Caerphilly / Caerffili
- Cefn-llydan, Powys
- Cefn-llyfnog, Powys
- Cefn-llys Isaf, Powys
- Cefn-ll�ch, Ceredigion / Sir Ceredigion
- Cefn-madryn, Gwynedd
- Cefn-maen-llwyd, Denbighshire / Sir Ddinbych
- Cefn-maen-uchaf, Denbighshire / Sir Ddinbych
- Cefn-mawr, Denbighshire / Sir Ddinbych [Hill/Mountain]
- Cefn-mawr, Wrexham [Town]
- Cefn-mawr, Denbighshire / Sir Ddinbych
- Cefn-mawr, Wrexham / Wrecsam [City/Town/Village]
- Cefn-melyn, Flintshire / Sir y Fflint
- Cefn-nannau, Conwy
- Cefn-nen, Gwynedd
- Cefn-nith, Powys
- Cefn-parc Fm, Rhondda Cynon Taff / Rhondda Cynon Taf [Farm]
- Cefn-pawl, Powys
- Cefn-Pen-llety, Denbighshire / Sir Ddinbych
- Cefn-Penarth, Powys
- Cefn-pennar-uchaf, Rhondda Cynon Taff / Rhondda Cynon Taf
- Cefn-pentre, Powys
- Cefn-perfedd, Powys
- Cefn-poeth, Powys
- Cefn-poeth, Isle of Anglesey / Sir Ynys Mon
- Cefn-rhudd, Conwy [Hill/Mountain]
- Cefn-Roger, Isle of Anglesey / Sir Ynys Mon
- Cefn-Saeson, Neath Port Talbot / Castell-nedd Port Talbot
- Cefn-suran, Powys
- Cefn-treflech, Conwy
- Cefn-trefor-fawr, Gwynedd
- Cefn-trenfa, Carmarthenshire / Sir Gaerfyrddin
- Cefn-twlch, Powys
- Cefn-uchaf, Neath Port Talbot / Castell-nedd Port Talbot
- Cefn-wig, Ceredigion / Sir Ceredigion
- Cefn-y-bedd, Flintshire / Sir y Fflint [City/Town/Village]
- Cefn-y-bedd, Flintshire [Town]
- Cefn-y-bedd Station, Flintshire [Station]
- Cefn-y-blaen, Powys [Hill/Mountain]
- Cefn-y-braich, Powys
- Cefn-y-braich, Wrexham / Wrecsam
- Cefn-y-bryn, Powys
- Cefn-y-bwlch, Powys
- Cefn-y-castell, Conwy
- Cefn-y-coed, Denbighshire / Sir Ddinbych
- Cefn-y-coed, Powys [Land Feature]
- Cefn-y-coed, Gwynedd
- Cefn-y-coed, Powys
- Cefn-y-coed Common, Carmarthenshire / Sir Gaerfyrddin
- Cefn-y-Coed Isaf, Conwy
- Cefn-y-don, Neath Port Talbot / Castell-nedd Port Talbot
- Cefn-y-don, Rhondda Cynon Taff / Rhondda Cynon Taf
- Cefn-y-fedw, Wrexham / Wrecsam
- Cefn-y-ffynnon, Conwy
- Cefn-y-gader, Denbighshire / Sir Ddinbych
- Cefn-y-gadfa, Conwy
- Cefn-y-gaer, Ceredigion / Sir Ceredigion
- Cefn-y-garth, Powys
- Cefn-y-Garth, Swansea / Abertawe [City/Town/Village]
- Cefn-y-gefail, Carmarthenshire / Sir Gaerfyrddin
- Cefn-y-groes-fawr, Conwy
- Cefn-y-grug, Powys [Hill/Mountain]
- Cefn-y-maes, Powys
- Cefn-y-maes, Gwynedd
- Cefn-y-maes, Shropshire
- Cefn-y-Meirch, Gwynedd
- Cefn-y-pant, Carmarthenshire [Town]
- Cefn-y-pant, Carmarthenshire / Sir Gaerfyrddin [City/Town/Village]
- Cefn-y-parc, Powys
- Cefn-y-rhodfa, Powys
- Cefn-y-wern-isaf, Powys
- Cefn-yr Esgair, Ceredigion [Land Feature]
- Cefn-yr-eryri, Powys
- Cefn-yr-iwrch, Denbighshire / Sir Ddinbych
- Cefn-yr-Owen, Gwynedd
- Cefn'bran, Powys
- Cefnamwlch, Gwynedd
- Cefnau, Powys
- Cefnbannog, Denbighshire / Sir Ddinbych
- Cefnblaenau, Carmarthenshire / Sir Gaerfyrddin
- Cefnblewog, Powys
- Cefnbrisgen, Carmarthenshire / Sir Gaerfyrddin
- Cefnbronllys, Powys
- Cefnbryn, Carmarthenshire / Sir Gaerfyrddin
- Cefnbryntalch, Powys
- Cefnbychan, Powys
- Cefnbychan, Powys
- Cefnbyrallt, Shropshire
- Cefnbys, Ceredigion / Sir Ceredigion
- Cefncaeau, Carmarthenshire / Sir Gaerfyrddin [City/Town/Village]
- Cefncaled, Powys
- Cefncamberth, Gwynedd
- Cefncarnau, Caerphilly / Caerffili
- Cefncerrig, Ceredigion / Sir Ceredigion
- Cefncethin, Carmarthenshire / Sir Gaerfyrddin
- Cefncleisiog, Powys
- Cefncoch, Powys
- Cefncoch, Powys
- Cefncoch, Ceredigion / Sir Ceredigion
- Cefncoch-gwyllt, Powys
- Cefncoed, Ceredigion / Sir Ceredigion
- Cefncoed, Carmarthenshire / Sir Gaerfyrddin
- Cefncoed, Powys
- Cefncoed Bach, Powys
- Cefncoed Isaf, Carmarthenshire / Sir Gaerfyrddin
- Cefncoed Uchaf, Carmarthenshire / Sir Gaerfyrddin
- Cefncyfrifol, Powys
- Cefncynfal, Powys
- Cefnderwen, Powys
- Cefndeuddwr, Gwynedd [Town]
- Cefndeuddwr, Gwynedd
- Cefndre, Powys
- Cefndreboeth, Powys
- Cefndyrys, Powys [Hill/Mountain]
- Cefneithin, Carmarthenshire [Town]
- Cefneithin, Carmarthenshire / Sir Gaerfyrddin [City/Town/Village]
- Cefnen, Conwy
- Cefnen, Conwy [Hill/Mountain]
- Cefnen Wen, Conwy [Hill/Mountain]
- Cefnfaes, Powys
- Cefnfarchen, Carmarthenshire / Sir Gaerfyrddin
- Cefnfedw, Powys
- Cefnfedwfawr, Powys
- Cefnfeusydd Fm, Gwynedd [Farm]
- Cefnffordd, Neath Port Talbot / Castell-nedd Port Talbot
- Cefnfforest-fawr, Swansea / Abertawe
- Cefnfilltir, Gwynedd
- Cefnfoelallt, Ceredigion / Sir Ceredigion
- Cefngaer, Ceredigion / Sir Ceredigion
- Cefngarw, Conwy
- Cefngarw, Conwy
- Cefngarw Wood, Monmouthshire / Sir Fynwy [Forest/Wood]
- Cefngast, Powys
- Cefngeudrum, Carmarthenshire / Sir Gaerfyrddin
- Cefngoleu Fm, Swansea / Abertawe [Farm]
- Cefngoleugoed, Powys
- Cefngornoeth, Carmarthenshire / Sir Gaerfyrddin
- Cefngraigwen, Ceredigion / Sir Ceredigion
- Cefngranod, Ceredigion / Sir Ceredigion
- Cefngwaunhynog, Powys
- Cefngweiriog, Ceredigion / Sir Ceredigion
- Cefngwernfa, Powys
- Cefngwrthafarn Uchaf, Ceredigion / Sir Ceredigion
- Cefngwyn, Conwy
- Cefngwyn, Powys
- Cefnhinog Fm, Powys [Farm]
- Cefnhir, Powys
- Cefnhirfach, Powys
- Cefnhirfawr, Powys
- Cefnhirfryn, Carmarthenshire / Sir Gaerfyrddin
- Cefnhirfynydd Isaf, Conwy
- Cefnhirfynydd Uchaf, Conwy
- Cefni, Isle of Anglesey [River]
- Cefni, Isle of Anglesey [River]
- Cefni Reservoir, Isle of Anglesey / Sir Ynys Mon [Water Feature]
- Cefni Resr, Isle of Anglesey [Lake/Loch]
- Cefnllan, Powys
- Cefnllan, Carmarthenshire / Sir Gaerfyrddin
- Cefnllanio Fm, Ceredigion / Sir Ceredigion [Farm]
- Cefnllidiart, Ceredigion / Sir Ceredigion
- Cefnllwyd, Powys
- Cefnllwyn, Ceredigion / Sir Ceredigion
- Cefnllwyni, Powys
- Cefnllwynpiod, Ceredigion / Sir Ceredigion
- Cefnllys Castle, Powys [Antiquity (non Roman)]
- Cefnllysgwynne, Powys
- Cefnmabws, Ceredigion / Sir Ceredigion
- Cefnmachen-isaf, Bridgend / Pen-y-Bont ar Ogwr
- Cefnmachen-uchaf, Bridgend / Pen-y-Bont ar Ogwr
- Cefnmachllys, Powys
- Cefnmaes, Ceredigion / Sir Ceredigion
- Cefnmaes, Ceredigion / Sir Ceredigion
- Cefnmaesmawr, Powys
- Cefnmawr, Powys
- Cefnmawr, Neath Port Talbot / Castell-nedd Port Talbot
- Cefnmelgoed, Ceredigion / Sir Ceredigion
- Cefnmeurig, Carmarthenshire / Sir Gaerfyrddin
- Cefnmystrych, Carmarthenshire / Sir Gaerfyrddin
- Cefnnantmel, Powys
- Cefnpenarth, Powys
- Cefnpennar, Rhondda Cynon Taff / Rhondda Cynon Taf [City/Town/Village]
- Cefnperfa, Powys
- Cefnpwllhen, Carmarthenshire / Sir Gaerfyrddin
- Cefnrhos-gwawr, Rhondda Cynon Taff / Rhondda Cynon Taf
- Cefnrhuddlan Uchaf, Ceredigion / Sir Ceredigion
- Cefnrickett, Carmarthenshire / Sir Gaerfyrddin
- Cefns, Shropshire
- Cefntelych, Carmarthenshire / Sir Gaerfyrddin
- Cefntilla Court, Monmouthshire / Sir Fynwy
- Cefntrefor-isaf, Gwynedd
- Cefntreuddyn, Gwynedd
- Cefntwrch, Powys
- Cefntyle-brych, Neath Port Talbot [Summit]
- Cefntyle-brych, Neath Port Talbot / Castell-nedd Port Talbot
- Cefntyncoed, Ceredigion / Sir Ceredigion
- Cefnucheldre, Carmarthenshire / Sir Gaerfyrddin
- Cefnvaes Fm, Neath Port Talbot / Castell-nedd Port Talbot [Farm]
- Cefnwyrygrug, Powys
- Cefnybidwal, Denbighshire / Sir Ddinbych
- Cefnycerrig, Conwy
- Cefnydd, Gwynedd
- Cefnydre, Pembrokeshire / Sir Benfro
- Cefnyrysgub, Carmarthenshire / Sir Gaerfyrddin
- Cefnysgwydd Bach, Isle of Anglesey / Sir Ynys Mon
Streets
- Cefn, Buttington, Welshpool, Powys, SY21
- Cefn Adda Close, Casnewydd / Newport, Casnewydd - Newport, Wales, NP20
- Cefn Adda Court, Casnewydd / Newport, Casnewydd - Newport, Wales, NP20
- Cefn Bach, Bethel, Caernarfon, Gwynedd, LL55
- Cefn Berain, Llannefydd, Denbigh, Clwyd, LL16
- Cefn Brith, Llanelli, Sir Gaerfyrddin - Carmarthenshire, Wales, SA14
- Cefn Brith, LL21
- Cefn Brith, Cerrigydrudion, Corwen, Clwyd, LL21
- Cefn Bryn, Porth, Mid Glamorgan, CF39
- Cefn Bychan, Pentyrch, Cardiff, CF15
- Cefn Bychan Close, Llangwm, Usk, Gwent, NP15
- Cefn Bychan Road, Pantymwyn, Mold, Clwyd, CH7
- Cefn Bychan Woods, Pantymwyn, Mold, Clwyd, CH7
- Cefn Byrle Road, Coelbren, Neath, West Glamorgan, SA10
- Cefn Cadnant, Caernarfon, Gwynedd, LL55
- Cefn Carfan Road, Hoel-laethog, Pen-y-bont ar Ogwr - Bridgend, Wales, CF32
- Cefn Carfan Road, Hoel-laethog, Pen-y-bont ar Ogwr - Bridgend, Wales, CF32
- Cefn Carnau Lane, Thornhill, Caerffili - Caerphilly, Wales, CF83
- Cefn Carnau Lane, Caerffili / Caerphilly, Caerffili - Caerphilly, Wales, CF83
- Cefn Carnau Lane, Caerffili - Caerphilly, Wales, CF83
- Cefn Carnau Road, Cardiff, CF14
- Cefn Celyn, Dunvant, Swansea, SA2
- Cefn Close, Glyncoch, Pontypridd, Mid Glamorgan, CF37
- Cefn Close, Rogerstone, Newport, Gwent, NP10
- Cefn Close, Croesyceiliog, Cwmbran, Gwent, NP44
- Cefn Coch, Radyr, Cardiff, CF15
- Cefn Coed, Nantgarw, Rhondda Cynon Taf - Rhondda Cynon Taf, Wales, CF15
- Cefn Coed, Blackwood, Gwent, NP12
- Cefn Coed, Dwrbach, Fishguard, Dyfed, SA65
- Cefn Coed, Bryncrug, Tywyn, Gwynedd, LL36
- Cefn Coed, Bridgend, Mid Glamorgan, CF31
- Cefn Coed Avenue, Cardiff, CF23
- Cefn Coed Crescent, Cockett, Swansea, SA2
- Cefn Coed Crescent, Cardiff, CF23
- Cefn Coed Gardens, Cardiff, CF23
- Cefn Coed Lane, Pen-y-bont ar Ogwr / Bridgend, Pen-y-bont ar Ogwr - Bridgend, Wales, CF31
- Cefn Coed Road, Cardiff, CF23
- Cefn Coed-Cae (Coedcae Back), Merthyr Tudful / Merthyr Tydfil, Merthyr Tudful - Merthyr Tydfil, Wales, CF48
- Cefn Court, Newbridge, Newport, Gwent, NP11
- Cefn Court, Rogerstone, Newport, Gwent, NP10
- Cefn Crescent, Cwmtillery, Abertillery, Gwent, NP13
- Cefn Crib Road, Tor-faen - Torfaen, Wales, NP11
- Cefn Cross, Cefn Cribwr, Bridgend, Mid Glamorgan, CF32
- Cefn Cwlyn, Bethesda, Braichmelyn, Bangor, Gwynedd, LL57
- Cefn Derwen, Bethel, Sir Ynys Mon - Isle of Anglesey, Wales, LL62
- Cefn Draw, Three Crosses, Swansea, SA4
- Cefn Drive, Rogerstone, Newport, Gwent, NP10
- Cefn Dyffryn, Groeslon, Gwynedd - Gwynedd, Wales, LL54
- Cefn Eithin, Llangristiolus, Bodorgan, Gwynedd, LL62
- Cefn Elan, Llanrug, Gwynedd - Gwynedd, Wales, LL55
- Cefn Esgair, Llanbadarn Fawr, Aberystwyth, Dyfed, SY23
- Cefn Eurgain Lane, Rhosesmor, Mold, Clwyd, CH7
- Cefn Fforest Avenue, Cefn Fforest, Blackwood, Gwent, NP12
- Cefn Ffynnon, Port Talbot, West Glamorgan, SA13
- Cefn Ffynon, Port Talbot, Castell-nedd Port Talbot - Neath Port Talbot, Wales, SA13
- Cefn Gallod, Trefin, Haverfordwest, Dyfed, SA62
- Cefn Gelli, Cwmgwrach, Neath, West Glamorgan, SA11
- Cefn Glas, Tredegar, Gwent, NP22
- Cefn Glas, Sketty, Swansea, SA2
- Cefn Glas, Ynysforgan, Swansea, SA6
- Cefn Glas Road, Bridgend, Mid Glamorgan, CF31
- Cefn Graig, Cardiff, CF14
- Cefn Gwrgan Road, Port Talbot, Castell-nedd Port Talbot - Neath Port Talbot, Wales, SA13
- Cefn Gwyn, Trawsfynydd, Blaenau Ffestiniog, Gwynedd, LL41
- Cefn Hawys, Welshpool / Y Trallwng, Powys - Powys, Wales, SY21
- Cefn Helyg, Sketty, Swansea, SA2
- Cefn Hendre, Caernarfon, Gwynedd, LL55
- Cefn Hengoed Road, Winch Wen, Swansea, SA1
- Cefn Ilan Road, Abertridwr, Caerphilly, Mid Glamorgan, CF83
- Cefn Lane, Shropshire, West Midlands, SY10
- Cefn Lane, Porth-y-waen, Shropshire, West Midlands, SY10
- Cefn Lane, Sir y Fflint - Flintshire, Wales, CH6
- Cefn Lane, Ynysybwl, Rhondda Cynon Taf - Rhondda Cynon Taf, Wales, CF37
- Cefn Lane, Glyncoch, Pontypridd, Mid Glamorgan, CF37
- Cefn Lane, Bwlchgwyn, Wrexham, Clwyd, LL11
- Cefn Llan, Pentyrch, Cardiff, CF15
- Cefn Llan Road, Pontardawe, Swansea, SA8
- Cefn Llan Science Park, Aberystwyth, Dyfed, SY23
- Cefn Llewelyn, Cilmery, Builth Wells, Powys, LD2
- Cefn Llwyn, Bonymaen, Swansea, SA1
- Cefn Llwynau Street, Penybryn, Hengoed, Mid Glamorgan, CF82
- Cefn Mably Park, Caerffili - Caerphilly, Wales, CF3
- Cefn Mably Road, Caerdydd - Cardiff, Wales, CF14
- Cefn Mably Road, Lisvane, Cardiff, CF14
- Cefn Maes, St Clears / Sanclêr, Sir Gaerfyrddin - Carmarthenshire, Wales, SA33
- Cefn Mawr Lane, Penpedairheol, Sir Fynwy - Monmouthshire, Wales, NP15
- Cefn Mawr Lane, Sir Fynwy - Monmouthshire, Wales, NP15
- Cefn Mawr Road, Monkswood, Usk, Gwent, NP15
- Cefn Meiriadog, St. Asaph, Clwyd, LL17
- Cefn Melindwr, Capel Bangor, Aberystwyth, Dyfed, SY23
- Cefn Melyn Lane, Cilcain, Mold, Clwyd, CH7
- Cefn Miaren, Neath, West Glamorgan, SA11
- Cefn Milwr, Hollybush, Cwmbran, Gwent, NP44
- Cefn Morfa, Morfa Nefyn, Pwllheli, Gwynedd, LL53
- Cefn Morfa, Llandrindod Wells, Powys, LD1
- Cefn Mount, Dinas Powys, South Glamorgan, CF64
- Cefn Nant, Pencoed, Bridgend, Mid Glamorgan, CF35
- Cefn Nant, Cardiff, CF14
- Cefn Onn Meadows, Lisvane, Cardiff, CF14
- Cefn Padrig, Sir Gaerfyrddin - Carmarthenshire, Wales, SA15
- Cefn Parc, Neath, West Glamorgan, SA10
- Cefn Parc, Penycae, Wrexham, Clwyd, LL14
- Cefn Parc, Tredegar, Gwent, NP22
- Cefn Penuel, Pentyrch, Cardiff, CF15
- Cefn Porth Road, Caerffili - Caerphilly, Wales, CF14
- Cefn Porth Road, Cardiff, CF14
- Cefn Rhos, Llangristiolus, Sir Ynys Mon - Isle of Anglesey, Wales, LL62
- Cefn Rhos, Tredegar, Gwent, NP22
- Cefn Rhychdir Road, Phillipstown, New Tredegar, Gwent, NP24
- Cefn Rise, Rogerstone, Newport, Gwent, NP10
- Cefn Road, County of Herefordshire, West Midlands, HR3
- Cefn Road, Defynnog, Powys - Powys, Wales, LD3
- Cefn Road, County of Herefordshire, West Midlands, HR2
- Cefn Road, Kenfig Hill / Mynyddcynffig, Pen-y-bont ar Ogwr - Bridgend, Wales, CF33
- Cefn Road, Wrecsam / Wrexham, Wrecsam - Wrexham, Wales, LL13
- Cefn Road, Glais, Swansea, SA7
- Cefn Road, Blackwood, Gwent, NP12
- Cefn Road, Bonymaen, Swansea, SA1
- Cefn Road, Bwlchgwyn, Wrexham, Clwyd, LL11
- Cefn Road, Cardiff, CF14
- Cefn Road, Cefn Cribwr, Bridgend, Mid Glamorgan, CF32
- Cefn Road, Cilcain, Mold, Clwyd, CH7
- Cefn Road, Connah'S Quay, Deeside, Clwyd, CH5
- Cefn Road, Deri, Bargoed, Mid Glamorgan, CF81
- Cefn Road, Gwaun Cae Gurwen, Ammanford, Dyfed, SA18
- Cefn Road, Hengoed, Mid Glamorgan, CF82
- Cefn Road, Bagillt, Clwyd, CH6
- Cefn Road, LL13
- Cefn Road, NP12
- Cefn Road, Old Colwyn, Colwyn Bay, Clwyd, LL29
- Cefn Road, Porth, Mid Glamorgan, CF39
- Cefn Road, Rogerstone, Newport, Gwent, NP10
- Cefn Road, St. Asaph, Clwyd, LL17
- Cefn Road, Wrexham, Clwyd, LL13
- Cefn Road, Lodge, Wrexham, Clwyd, LL11
- Cefn Road Upper, Deri, Bargoed, Mid Glamorgan, CF81
- Cefn Saeson Close, Neath, West Glamorgan, SA11
- Cefn Saeson Road, Birchgrove, Swansea, SA7
- Cefn Stylle Road, Gowerton, Swansea, SA4
- Cefn Stylle Road, SA4
- Cefn Talar, Caernarfon, Gwynedd, LL55
- Cefn Traeth, Pwllheli, Gwynedd, LL53
- Cefn Walk, Rogerstone, Newport, Gwent, NP10
- Cefn Wig, New Quay, Dyfed, SA45
- Cefn Y Bryn, Llandudno, Gwynedd, LL30
- Cefn Y Coed, Llandyssil, Montgomery, Powys, SY15
- Cefn Y Ddol, Ewloe, Sir y Fflint - Flintshire, Wales, CH5
- Cefn Y Fferm, Oakdale, Caerffili - Caerphilly, Wales, NP12
- Cefn Y Gader, Morfa Bychan, Porthmadog, Gwynedd, LL49
- Cefn Y Gwrych, Prestatyn, Clwyd, LL19
- Cefn Y Maes, Portmead, Swansea, SA5
- Cefn Y Mynydd, Tirphil, New Tredegar, Gwent, NP24
- Cefn y Nant, Wrecsam / Wrexham, Wrecsam - Wrexham, Wales, LL13
- Cefn Y Twr, Nefyn, Pwllheli, Gwynedd, LL53
- Cefn Y Wern, Rhosllanerchrugog, Wrecsam - Wrexham, Wales, LL14
- Cefn Yr Allt, Aberdulais, Neath, West Glamorgan, SA10
- Cefn Yspin Lane, Welshpool, Powys, SY21
- Cefn-Coed Crescent, Caerdydd / Cardiff, Caerdydd - Cardiff, Wales, CF23
- Cefn-Coed Gardens, Caerdydd / Cardiff, Caerdydd - Cardiff, Wales, CF23
- Cefn-Coed Road, Caerdydd / Cardiff, Caerdydd - Cardiff, Wales, CF23
- Cefn-Crib Road, Tor-faen - Torfaen, Wales, NP4
- Cefn-Cwlyn, Bethesda, Gwynedd - Gwynedd, Wales, LL57
- Cefn-Draw, Three Crosses, Abertawe - Swansea, Wales, SA4
- Cefn-Fforest Avenue, Y Coed Duon / Blackwood, Caerffili - Caerphilly, Wales, NP12
- Cefn-Glas Road, Pen-y-bont ar Ogwr / Bridgend, Pen-y-bont ar Ogwr - Bridgend, Wales, CF31
- Cefn-Glas Road, Pen-y-bont ar Ogwr / Bridgend, Pen-y-bont ar Ogwr - Bridgend, Wales, CF31
- Cefn-Parc, Castell-nedd / Neath, Castell-nedd Port Talbot - Neath Port Talbot, Wales, SA10
- Cefn-Pennar Road, Rhondda Cynon Taf - Rhondda Cynon Taf, Wales, CF45
- Cefn-Pennar Road, Aberpennar / Mountain Ash, Rhondda Cynon Taf - Rhondda Cynon Taf, Wales, CF45
- Cefn-Porth Road, Caerdydd - Cardiff, Wales, CF14
- Cefn-Rhychdir Road, New Tredegar, Caerffili - Caerphilly, Wales, NP24
- Cefn-Saeson Close, Castell-nedd / Neath, Castell-nedd Port Talbot - Neath Port Talbot, Wales, SA11
- Cefn-Y-Bryn, Conwy, Conwy - Conwy, Wales, LL30
- Cefn-Y-Gwrych, Gallt / Meliden, Sir Ddinbych - Denbighshire, Wales, LL19
- Cefn-Y-Lon, Caerphilly, Mid Glamorgan, CF83
- Cefn-Y-Maes, Abertawe / Swansea, Abertawe - Swansea, Wales, SA5
- Cefn-Yr-Allt, Aberdulais, Castell-nedd Port Talbot - Neath Port Talbot, Wales, SA10
- Cefn-Yr-Allt, Aberdulais, Castell-nedd Port Talbot - Neath Port Talbot, Wales, SA10
- Cefn-Yspin Lane, Welshpool / Y Trallwng, Powys - Powys, Wales, SY21
- Cefn-Yspin Lane, Powys - Powys, Wales, SY21
- Cefna Close, Connah'S Quay, Deeside, Clwyd, CH5
- Cefnamlwch, Tudweiliog, Pwllheli, Gwynedd, LL53
- Cefnbyrle Road (Heol Cefnbyrle), Coelbren, Powys - Powys, Wales, SA10
- Cefncoed Road, SA12
- Cefncoed Road, Cwmavon, Port Talbot, West Glamorgan, SA12
- Cefncrug, Saron, Ammanford, Dyfed, SA18
- Cefndon Terrace, Cwmavon, Port Talbot, West Glamorgan, SA12
- Cefndon Terrace, Hirwaun, Aberdare, Mid Glamorgan, CF44
- Cefndre, Wrexham, Clwyd, LL13
- Cefndy Road, LL18
- Cefndy Road, Rhyl, Clwyd, LL18
- Cefneithin Road, Gorslas, Llanelli, Dyfed, SA14
- Cefnesgair, Llanbadarn Fawr, Sir Ceredigion - Ceredigion, Wales, SY23
- Cefnfaes Street, Bethesda, Carneddi, Bangor, Gwynedd, LL57
- Cefnllan, Aberystwyth, Sir Ceredigion - Ceredigion, Wales, SY23
- Cefnllan, Waunfawr, Aberystwyth, Dyfed, SY23
- Cefnllan Road (Ffordd Cefnllan), Pontardawe, Castell-nedd Port Talbot - Neath Port Talbot, Wales, SA8
- Cefnllan Road, Waunfawr, Aberystwyth, Dyfed, SY23
- Cefnllwyd, Capel Dewi, Aberystwyth, Dyfed, SY23
- Cefnllys Lane, Llandrindod Wells, Powys, LD1
- Cefnllys Lane, Cefnllys, Llandrindod Wells, Powys, LD1
- Cefnllys Lane, LD1
- Cefnpennar Road, Aberpennar / Mountain Ash, Rhondda Cynon Taf - Rhondda Cynon Taf, Wales, CF45
- Cefnpennar Road, Rhondda Cynon Taf - Rhondda Cynon Taf, Wales, CF44
- Cefnpennar Road, Aberdare, Mid Glamorgan, CF44
- Cefnsaeson Road, Abertawe / Swansea, Abertawe - Swansea, Wales, SA7
- Clos Cefn Moel (Cefn Moel Close), Bwlch, Powys - Powys, Wales, LD3
- Clos Cefn Moel (Cefn Moel Close), Bwlch, Powys - Powys, Wales, LD3
