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
New England town early in the 19th century. By 1850, the only New England state that still had large unincorporated areas was Maine; by the end of the 19th century, most areas in Maine that could realistically be settled had been organized into towns. Early town organization in Vermont and much of New Hampshire proceeded in a somewhat different manner from that of the other New England states. In these areas, towns were often "chartered" long before any settlers moved into a particular area. This was very common in the mid to late 18th century—although there were towns which predated that period and