Place name origins only have little relation to the Roman names (e.g. Chester - 'Deva', Winchester - 'Venta Belgarum' etc.). Many English places derive part of their name from the river upon which they were built, but in the 16th century many English rivers were renamed with back-formations from towns on their banks. Cambridge, perhaps uniquely, illustrates both effects: originally "Grontabricc", a bridge on the Granta, the name became "Cantebruge" and then "Cambrugge", from which the river was renamed Cam. The vast majority of place names in Wales are Welsh by origin, containing elements such as Llan-, Aber-, Pen- etc. Along the south
Venta Belgarum east. Excavations of the cemetery were carried out by British archaeologist Julian Richards in 1998, and again in 2013, as part of the BBC television "Meet the Ancestors" series. From the mid-4th century, new development at Venta halted. Houses fell into disrepair and the drainage system collapsed. The population concentrated itself in the higher and drier areas of the town. The defences were however strengthened and the cemeteries remained in use, notably with burials of males wearing so-called military-style mercenary belts. Historian David Nash Ford identifies the community as the ("Fort Venta") listed by Nennius among the 28 cities of