Nennius' Historia Brittonum

List of 33 British Towns


ICair HebraucYork (Eburacum).
IICair CeintCanterbury (Durovernum Cantiacorum)
Ceint, Anglesey.
IIICair Gurcocf. Ceirchiogg, Anglesey.
IVCair Guorthegernf. Gwitheryn, Denbighshire.
VCair Gusteintf. Llan-Gustenin, Caernarvonshire.
VICair GuoranegonWorcester (Vertis)
Warrington, Cheshire.
VIICair SegeintSilchester, Hampshire (Calleva Atrebatum)
Caernarfon, Gwynedd (Segont[ium]); Caernarfon 'The fort at the river-mouth'. From Welsh caer + an + arfon.
VIIICair Guin-truisNorwich, Norfolk;
Gwynnys, Cardiganshire.
IXCair MerdinCarmarthen, Dyfed (Moridunum Demetarum); Caermarthen Possibly 'The fortress of Merlin' from Welsh caer + pers-name *Myrddin; or (more likely) from a contraction of the Romano-British name Moridunum, which itself may mean 'the hillfort of decay', from Latin mori + Celtic dunum; or 'the hillfort of a man called *Merdi'.
XCair Perisf. Llan-Peris, Caernarvonshire;
Portchester, Hampshire (Portus Ardaoni)
XICair LionCaerleon, Monmouthshire (Isca Silurum / Castra Legionis); Caerleon 'The fortress of the Legion'. From Welsh caer + Latin Legionis. The original name, Isca Silurum is Romano-British for 'the waterside place of the Silures tribe', derived from the Welsh/Gaelic word uisg / usk 'water' and the name of the local Celtic tribe the Silures.
XIICair Mencipitf. Mansell, Herefordshire;
St. Albans, Hertfordshire (Verulamium)
XIIICair Carataucf. Carrog, or Carroc, Cardiganshire;
Catterick, Yorkshire (Cataractonium);
Caer Caradoc, Knighton, Shropshire;
Caer Caradoc, Church Stretton, Shropshire.
XIVCair Cerif. Kerry, Montgomeryshire;
Cirencester, Gloucestershire (Corinium Dobunnorum)
XVCair GlouiGloucester (Glevum)
St. Gluvias, Cornwall.
XVICair LuilidCarlisle, Cumbria (Luguvalium)
XVIICair GrauntGrantchester, nr. Cambridge (Duroliponte)
XVIIICair DaunDoncaster, Yorkshire (Danum)
XIXCair BritocBristol, Avon;
St. Colan, Cornwall.
XXCair MeguaidMeivod, Montgomeryshire.
XXICair MauiguidMenigid, Anglesey;
Mwynglawd, Denbighshire;
Manchester (Mamucium)
XXIICair LigionChester, Cheshire (Deva / Castra Legionis);
Llan-ligan, Montgomeryshire.
XXIIICair GuentCaerwent, Monmouthshire (Venta Silurum)
XXIVCair CollonColchester, Essex (Camulodunum);
St. Colan, Cornwall.
XXVCair LondeinLondon (Londinium)
XXVICair Guorconf. Warren, or Woran, Pembrokeshire.
XXVIICair LerionLeicester (Ratae Coritanorum)
XXVIIICair Drait-houDrayton, Shropshire.
XXIXCair PensavelcoitPen-Selwood, nr. Ilchester, Somerset (Lindinis);
Pevensey, East Sussex (Anderitum).
XXXCair TeunTeyn-Grace, Devon.
XXXICair Urnahcf. Llan-Fernach, Pembroke.
Wroxeter, Shropshire (Uricon / Viroconium Cornoviorum).
XXXIICair Celemionf. Kilmaen-Llwyd, Pembroke;
South Cadbury, Somerset ('Camelot').
XXXIIICair Loit-coitLudlow;
Lytchett, Dorsetshire;
Wall, Nr. Lichfield, Staffordshire (Letocetum);
Lincoln.

Other RBO Geographical Resources

Ptolemy's Geography * Antonine Itinerary * Notitia Dignitatum * Ravenna Cosmography * Peutinger Table

Bibliographical Links

The Saxon Chronicle - A.D.1 to A.D.1154 trans. by Reverend J. Ingram (Longman, 1823);