Cirencester, some fifty kilometres west of Oxford, is an English town on the site of a Roman city. Even though its original name (after Ptolemy in the second century CE) was supposedly Corinium, giving the Ciren- of Cirencester, this has never had a satisfying etymology. However, Welsh car 'friend' or Irish cara 'friend' may now permit emendation of Corinium to Carinium 'place of Carinos,' a personal form known elsewhere. It means 'little beloved one, little friend' and is compatible with development to Ciren-. If so, the mystery surrounding Cirencester, capital of the Dobunni, will be solved. The first Carinium would be the nearby Iron Age citadel of Bagendon Dykes. When the Romans occupied the area, they founded a city five kilometres away, transferring local people to it and applying the name of the old settlement to the new one, as elsewhere in Britain (Colchester, St Albans, Wroxeter). Modem Cirencester will thus (it seems) be called after Carinus or Carinos, an otherwise unknown Briton who occupied land at Bagendon some two millennia ago.