Flavia Caesariensis, sometimes known as Britannia Flavia, was one of the provinces of the Diocese of "the Britains" created during the Diocletian Reforms at the end of the 3rd century. It was probably
Roman Britain around AD 410, without speculative provincial borders.
The traditional arrangement of the late Roman provinces after Camden, placing Flavia in central England. On the basis of modern archaeology, it's known that at least Corinium was part of Britannia I.
Lindum Colonia was the Roman settlement which is now the City of Lincoln in Lincolnshire. It was founded as a Roman Legionary Fortress during the reign of the Emperor Nero or possibly later. Evidence
The Newport Arch is a surviving part of the north gate to the Upper City.
Tombstone of Gaius Valerius, a standard bearer of the Ninth Legion. Found on the South Common, Lincoln (RIB 257)
Roman north wall of Lindum Colonia
Stretch of Roman Wall at East Bight by the Newport Arch, where there was a water storage tank