Flavia Caesariensis (

Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...

for "The

Caesar Gaius Julius Caesar (12 or 13 July 100 BC – 15 March 44 BC) was a Roman general and statesman. A member of the First Triumvirate, Caesar led the Roman armies in the Gallic Wars before defeating his political rival Pompey in a civil war. He ...

ian province of Flavius"), sometimes known as Britannia Flavia, was one of the

provinces A province is an administrative division within a country or state. The term derives from the ancient Roman , which was the major territorial and administrative unit of the Roman Empire's territorial possessions outside Italy. The term ''provi ...

of the

Diocese In Ecclesiastical polity, church governance, a diocese or bishopric is the ecclesiastical district under the jurisdiction of a bishop. History In the later organization of the Roman Empire, the increasingly subdivided Roman province, prov ...

of " the Britains" created during the Diocletian Reforms at the end of the 3rd century. It was probably created after the defeat of the usurper

Allectus Allectus (died 296) was a Roman-Britannic usurper-emperor in Britain and northern Gaul from 293 to 296. History Allectus was treasurer to Carausius, a Menapian officer in the Roman navy who had seized power in Britain and northern Gaul in 28 ...

Constantius Chlorus Flavius Valerius Constantius ( – 25 July 306), also called Constantius I, was a Roman emperor from 305 to 306. He was one of the four original members of the Tetrarchy established by Diocletian, first serving as Caesar (title), ''caesar'' ...

in AD 296 and was mentioned in the

Verona List The ''Laterculus Veronensis'' or Verona List is a list of Roman provinces and barbarian peoples from the time of the emperors Diocletian and Constantine I, most likely from AD 314. The list is transmitted only in a 7th-century manuscript preserve ...

of the Roman provinces. It seems to have been named after Chlorus's family and was probably located beside Maxima Caesariensis, but their positions and capitals remain uncertain. At present, most scholars place Flavia Caesariensis in the southern

Pennines The Pennines (), also known as the Pennine Chain or Pennine Hills, are a range of highland, uplands mainly located in Northern England. Commonly described as the "Vertebral column, backbone of England" because of its length and position, the ra ...

, possibly reaching the

Irish Sea The Irish Sea is a body of water that separates the islands of Ireland and Great Britain. It is linked to the Celtic Sea in the south by St George's Channel and to the Inner Seas off the West Coast of Scotland in the north by the North Ch ...

and including the lands of the

Iceni The Iceni ( , ) or Eceni were an ancient tribe of eastern Britain during the British Iron Age, Iron Age and early Roman Britain, Roman era. Their territory included present-day Norfolk and parts of Suffolk and Cambridgeshire, and bordered the ar ...

. Its capital is sometimes placed at

Lindum Colonia 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 (58–68 AD) or possibly later. Evidence from Roman tombstones ...

( Lincoln). __NOTOC__ Roman Britain 410

History

Following the Roman conquest, Britain was administered as a single province from

Camulodunum Camulodunum ( ; ), the Roman Empire, Ancient Roman name for what is now Colchester in Essex, was an important Castra, castrum and city in Roman Britain, and the first capital of the province. A temporary "wikt:strapline, strapline" in the 1960s ...

(

Colchester Colchester ( ) is a city in northeastern Essex, England. It is the second-largest settlement in the county, with a population of 130,245 at the 2021 United Kingdom census, 2021 Census. The demonym is ''Colcestrian''. Colchester occupies the ...

) and then

Londinium Londinium, also known as Roman London, was the capital of Roman Britain during most of the period of Roman rule. Most twenty-first century historians think that it was originally a settlement established shortly after the Roman conquest of Brit ...

(

London London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...

) until the Severan Reforms following the revolt of its

governor A governor is an politician, administrative leader and head of a polity or Region#Political regions, political region, in some cases, such as governor-general, governors-general, as the head of a state's official representative. Depending on the ...

Clodius Albinus Decimus Clodius Albinus ( 150 – 19 February 197) was a Roman imperial pretender between 193 and 197. He was proclaimed emperor by the legions in Britain and Hispania after the murder of Pertinax in 193 (known as the "Year of the Five Emperors") ...

. These divided the territory into Upper and Lower Britain (''Britannia Superior'' and ''Inferior''), whose respective capitals were at Londinium and

Eboracum Eboracum () was a castra, fort and later a coloniae, city in the Roman province of Roman Britain, Britannia. In its prime it was the largest town in northern Britain and a provincial capital. The site remained occupied after the decline of the ...

(

York York is a cathedral city in North Yorkshire, England, with Roman Britain, Roman origins, sited at the confluence of the rivers River Ouse, Yorkshire, Ouse and River Foss, Foss. It has many historic buildings and other structures, such as a Yor ...

). During the first phases of the Diocletian Reforms, Britain was under the control of the

's Britannic Empire as part of the Carausian Revolt. At some point after the territory was retaken by

in AD 296, the Diocese of the Britains (with its

vicar A vicar (; Latin: '' vicarius'') is a representative, deputy or substitute; anyone acting "in the person of" or agent for a superior (compare "vicarious" in the sense of "at second hand"). Linguistically, ''vicar'' is cognate with the English p ...

at Londinium) was formed and made a part of

Prefecture A prefecture (from the Latin word, "''praefectura"'') is an administrative jurisdiction traditionally governed by an appointed prefect. This can be a regional or local government subdivision in various countries, or a subdivision in certain inter ...

Gaul Gaul () was a region of Western Europe first clearly described by the Roman people, Romans, encompassing present-day France, Belgium, Luxembourg, and parts of Switzerland, the Netherlands, Germany, and Northern Italy. It covered an area of . Ac ...

. The Britains were divided among three, four, or five provinces, which seem to have borne the names Prima, Secunda, Maxima Caesariensis, and (possibly) Flavia Caesariensis and Valentia. The placement and capitals of these late British provinces are uncertain, although the ''

Notitia Dignitatum The (Latin for 'List of all dignities and administrations both civil and military') is a document of the Late Roman Empire that details the administrative organization of the Western and the Eastern Roman Empire. It is unique as one of very ...

'' lists the

(') of Flavia being of equestrian rank, making it unlikely to have been based in

. The list of bishops who attended the 314 Council of Arles is patently corrupt but generally assumed to have mimicked the Roman administration: the identification of

as a provincial capital rests on proposed emendations of one or the other of the bishops from the cities ''Londinensi'' and ''colonia Londinensium''. Those emendations are highly speculative: Bishop Ussher proposed '' Colonia'', Selden ''

Camaloden Colchester ( ) is a city in northeastern Essex, England. It is the second-largest settlement in the county, with a population of 130,245 at the 2021 United Kingdom census, 2021 Census. The demonym is ''Colcestrian''. Colchester occupies the ...

'' or '' Camalodon'', and Spelman '' Camalodunum'' (all various names of

);Thackery, Francis
''Researches into the Ecclesiastical and Political State of Ancient Britain under the Roman Emperors: with Observations upon the Principal Events and Characters Connected with the Christian Religion, during the First Five Centuries'', pp. 272 ff.
T. Cadell (London), 1843. Camden took it as

Caerleon Caerleon ( ; ) is a town and Community (Wales), community in Newport, Wales. Situated on the River Usk, it lies northeast of Newport city centre, and southeast of Cwmbran. Caerleon is of archaeological importance, being the site of a notable ...

, with Bishop Stillingfleet and Thackery proposing that a

scribal error A typographical error (often shortened to typo), also called a misprint, is a mistake (such as a spelling or transposition error) made in the typing of printed or electronic material. Historically, this referred to mistakes in manual typesetting ...

created ''Civ. Col. Londin.'' from an original '' Civ. Col. Leg. II'' (

). Describing the metropolitan sees of the early British church established by SS Fagan and " Duvian",

Gerald of Wales Gerald of Wales (; ; ; ) was a Cambro-Norman priest and historian. As a royal clerk to the king and two archbishops, he travelled widely and wrote extensively. He studied and taught in France and visited Rome several times, meeting the Pope. He ...

placed Flavia around

, extending into

Mercia Mercia (, was one of the principal kingdoms founded at the end of Sub-Roman Britain; the area was settled by Anglo-Saxons in an era called the Heptarchy. It was centred on the River Trent and its tributaries, in a region now known as the Midlan ...

.Giraldus Cambriensis erald of Walesbr>''De Inuectionibus'' [On Invectives], Vol. II, Ch. I, in ''Y Cymmrodor: The Magazine of the Honourable Society of Cymmrodorion'', Vol. XXX, pp. 130–1.
George Simpson & Co. (Devizes), 1920.

. Translated by W.S. Davies a
''The Book of Invectives of Giraldus Cambrensis'' in ''Y Cymmrodor: The Magazine of the Honourable Society of Cymmrodorion'', Vol. XXX, p. 16.
George Simpson & Co. (Devizes), 1920. Bertram's highly-influential

forgery Forgery is a white-collar crime that generally consists of the false making or material alteration of a legal instrument with the specific mens rea, intent to wikt:defraud#English, defraud. Tampering with a certain legal instrument may be fo ...

'' The Description of Britain'' placed it similarly: although not including London, it included central England and was bound by the

Severn The River Severn (, ), at long, is the longest river in Great Britain. It is also the river with the most voluminous flow of water by far in all of England and Wales, with an average flow rate of at Apperley, Gloucestershire. It rises in t ...

, the

Thames The River Thames ( ), known alternatively in parts as the River Isis, is a river that flows through southern England including London. At , it is the longest river entirely in England and the second-longest in the United Kingdom, after th ...

, the

North Sea The North Sea lies between Great Britain, Denmark, Norway, Germany, the Netherlands, Belgium, and France. A sea on the European continental shelf, it connects to the Atlantic Ocean through the English Channel in the south and the Norwegian Se ...

, and the

Humber The Humber is a large tidal estuary on the east coast of Northern England. It is formed at Trent Falls, Faxfleet, by the confluence of the tidal rivers River Ouse, Yorkshire, Ouse and River Trent, Trent. From there to the North Sea, it forms ...

and

Mersey The River Mersey () is a major river in North West England. Its name derives from Old English and means "boundary river", possibly referring to its having been a border between the ancient kingdoms of Mercia and Northumbria. For centuries it ...

;Hughes, William
''The Geography of British History: A Geographical Description of the British Islands at Successive Periods from the Earliest Times to the Present Day: With a Sketch of the Commencement of Colonisation on the Part of the English Nation'', p. 87.
Longman, Green, Longman, Roberts, & Green (London), 1863. this was accepted for a century from the 1740s to the 1840s before being revealed as a forgery. Modern scholars usually place

in Maxima rather than Flavia. Birley has argued that Maxima and Flavia originally consisted of a single province, which received the name ''Britannia Caesariensis'' as a mark of favour for support against the rebel

in 296. Although Flavia is usually thought to have been formed from the old province of Lower Britain, Birley proposes that Upper Britain was divided in two (between Prima and Caesariensis) and then three (Prima, Maxima, and Flavia). This repeats Camden's earlier theory (relying on Sextus Rufus) that Maxima was formed first and Flavia followed sometime after. Supporters of a later creation of Flavia note that it need not refer to

himself: instead, it may have honored any of Constantine, Valentinian, or Theodosius. Stillingfleet, Edward
''Origines Britannicæ: or, the Antiquities of the British Churches with a Preface, concerning Some Pretended Antiquities Relating to Britain, in Vindication of the Bishop of St. Asaph'', New Ed., pp. 77 ff.
Wm. Straker (London), 1840.

References

{{Late Roman Provinces, state=collapsed Late Roman provinces Roman Britain States and territories established in the 3rd century States and territories established in the 4th century 410 disestablishments