Caer
Caer is a placename element in Welsh meaning "stronghold", "fortress", or "citadel", roughly equivalent to an Old English suffix now variously written as,, and.
In modern Welsh orthography, caer is usually written as a prefix, although it was formerly—particularly in Latin—written as a separate word. The Breton equivalent is kêr, which is present in many Breton placenames as the prefix Ker-.
Etymology
The term is thought to have derived from the Brittonic *kagro- and to be cognate with cae. Although stone castles were largely introduced to Wales by the invading Normans, "caer" was and remains used to describe the settlements around some of them as well. An example is the Roman fort at Caernarfon, formerly known in Welsh as Caer Seiont from its position on the Seiont; the later Edwardian castle and its community were distinguished as Caer yn Arfon from "ar Fôn", ". However, the modern names of the Roman fort and Edwardian castle themselves are now Segontiwm or Castell Caernarfon, while the communities carry on the name caer.Note that the term is not believed to be related to the Irish cathair, which is instead derived from Proto-Celtic *katrixs, *catarax.
Britain
's account of the Saxon invasions of Britain claimed that there were 28 fortified Roman cities on the island, without listing them. The History of the Britons traditionally attributed to Nennius includes a list of the 28, all of which are called "caer". Controversy exists over whether this list includes only Roman cities or a mixture of Roman cities and non-Roman settlements. Some of the place names that have been proposed include:- Cair Brithon
- Cair Caratauc
- Cair Ceint
- Cair Celemion
- Cair Colun
- Cair Custoeint
- Cair Daun
- Cair Draitou
- Cair Ebrauc
- Cair Grauth
- Cair Guent
- Cair Guiragon
- Cair Guorthigirn
- Cair Guricon
- Cair Legeion Guar Usic
- Cair Legion
- Cair Lerion
- Cair Ligualid
- Cair Luit Coyt
- Cair Lundem
- Cair Maunguid
- Cair Meguaid
- Cair Mincip
- Cair 'Pensa vel Coyt'
- Cair Peris
- Cair Segeint
- Cair Urnarc
Wales
- Caerau, Glamorgan
- Caereinion, Montgomeryshire
- Caerfallwch, Flintshire
- Caerfarchell, Pembrokeshire
- Carmarthen, Carmarthenshire.
- Caergeiliog, Anglesey
- Caergwrle, Flintshire
- Caerleon, Glamorgan
- Caernarfon, Caernarfonsire
- Caerphilly, Glamorgan
- Caerrhun, Caernarfonshire
- Caersws, Montgomeryshire
- Caerwent, Monmouthshire
- Cardiff, Glamorgan
- Carew, Pembrokeshire
- Gaerwen, Anglesey
- Holyhead, Anglesey
England
- Caermote, Cumberland
- Cardew, Cumberland
- Cardunneth, Cumberland
- Cardurnock, Cumberland
- Cargo, Cumberland
- Carhullan, Westmorland
- Carrick, Northumberland
- Carlatton, Cumberland
- Carlisle, Cumberland
- Carmolt, Cumberland
- Carrycoats, Northumberland
- Carvoran, Northumberland
- Kerrier, Cornwall
- Cambridge
- Canterbury
- Chester
- Chichester
- Durham
- Gloucester
- Exeter
- Lancaster
- Leicester
- Lichfield
- Salisbury
- Winchester
- Worcester
Scotland
- Caerketton, Midlothian
- Caerlanrig, Roxburghshire
- Caerlaverock, Dumfriesshire
- Carcluie, Ayrshire
- Carden, Fife. Formerly Cardenni
- Cardonald, Renfrewshire
- Carleith, Dunbartonshire
- Carmichael, Lanarkshire
- Carmuirs, Stirlingshire
- Carmurie, Fife
- Carmyllie, Angus
- Carpow, Perthshire
- Carriden, West Lothian
- Carruthers, Dumfriesshire
- Carstairs, Lanarkshire
- Crail, Fife
- Cramond, Midlothian
- Kair, Kincardineshire
- Keir, Aberdeenshire
- Keir, Dumfries-shire
- Keir, Stirlingshire
- Keirhill, West Lothian
- Keirs, Ayrshire
- Kirkbuddo, Angus
- Kirkcaldy, Fife
- Kirkintilloch, Dunbartonshire. Formerly ''Caerpentaloch''
In fiction
- Caer Benowyc, Caer Berkstead, Caer Boldiam, Caer Caddug, Caer Diogel, Caer Erasleigh, Caer Gothwaite, Caer Hurbury, Caer Renaris, Caer Sidi, Caer Sursbrooke, Caer Ulfwych, and Caer Witrin from the video game Dark Age of Camelot
- Caer Bocram from the video game Tales of Vesperia
- Caer Bronach and Caer Oswin from video game Dragon Age: Inquisition
- Caer Cadarn from the novel series The Warlord Chronicles - set in Cadbury Castle, Somerset, according to the author's note in The Winter King.
- Caer Dallben from The Chronicles of Prydain novel series
- Caer Darrow from the video game World of Warcraft
- Caer Dhú from the novel The Sword of Rhiannon
- Caer Llyr and Caer Secaire from the novel The Dark World
- Caer Lyon from the video game Wizard101
- Caer Siorai from the video game Death's Gambit
- Caer Xhan from the video game Breath of Fire III
- Cair Paravel from the Chronicles of Narnia novel series
- Kaer Morhen and Kaer Trolde from The Witcher novel series
- Kaer Norvent from the video game Final Fantasy XVI
- Kêr-Is, of Breton legend
- Kerrith, town mentioned in the novel Rebecca, set in Cornwall
- The Rabbit of Caerbannog from the film Monty Python and the Holy Grail
- Caer-Konig & Caer Dineval from the D&D Campaign "Rime of the Frost Maiden