The Description of Britain, also known by its Latin name De Situ Britanniae, was a literary forgery perpetrated by Charles Bertram on the historians of England. It purported to be a 15th-century manus
Title page of Britannicarum Gentium Historiae Antiquae Scriptores Tres (1757), the first publication to include De Situ Britanniae
Bertram's facsimile of the first page of De Situ Britanniae, with the notes added for Hatcher's 1809 edition.
The Pennines, the ‘backbone of England’
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.