Colonia Glevum

Although the beginnings of this town was that of a fort Vicus, it received Colonia Status under Nerva, and became a freetstanding city.

http://roman-britain.co.uk/places/glevum.htm

http://www.romeacrosseurope.com/?p=2450

http://www.gloucester.gov.uk/resident/Documents/Planning%20and%20Building%20Control/EvidenceBase/UrbanFrameworkStudyScopingReport3Historicaldevelopmentpart1.pdf