Deira ( ;

Old Welsh Old Welsh () is the stage of the Welsh language from about 800 AD until the early 12th century when it developed into Middle Welsh.Koch, p. 1757. The preceding period, from the time Welsh became distinct from Common Brittonic around 550, ha ...

/ or ; or ) was an area of

Post-Roman Britain Sub-Roman Britain, also called post-Roman Britain or Dark Age Britain, is the period of late antiquity in Great Britain between the end of Roman rule and the founding of Anglo-Saxon kingdoms. The term was originally used to describe archae ...

, and a later Anglian kingdom.

Etymology

The name of the kingdom is of Brythonic origin, and is derived from the

Proto-Celtic Proto-Celtic, or Common Celtic, is the hypothetical ancestral proto-language of all known Celtic languages, and a descendant of Proto-Indo-European. It is not attested in writing but has been partly Linguistic reconstruction, reconstructed throu ...

, meaning 'oak' ( in modern Welsh), in which case it would mean 'the people of the Derwent', a derivation also found in the

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 ...

name for Malton, . It is

cognate In historical linguistics, cognates or lexical cognates are sets of words that have been inherited in direct descent from an etymological ancestor in a common parent language. Because language change can have radical effects on both the s ...

with the modern Irish word (); the names for

County Londonderry County Londonderry (Ulster Scots dialects, Ulster-Scots: ''Coontie Lunnonderrie''), also known as County Derry (), is one of the six Counties of Northern Ireland, counties of Northern Ireland, one of the thirty-two Counties of Ireland, count ...

and the city of

Derry Derry, officially Londonderry, is the second-largest City status in the United Kingdom, city in Northern Ireland, and the fifth-largest on the island of Ireland. Located in County Londonderry, the city now covers both banks of the River Fo ...

stem from this word.

History

Brythonic Deira

Following the

Roman withdrawal from Britain The end of Roman rule in Britain occurred as the military forces of Roman Britain withdrew to defend or seize the Western Roman Empire's continental core, leaving behind an autonomous post-Roman Britain. In 383, the usurper Magnus Maximus wit ...

a number of successor kingdoms rose in northern England, reflecting pre-Roman tribal territories. The area between the Humber and

River Tees The River Tees (), in England, rises on the eastern slope of Cross Fell in the North Pennines and flows eastwards for to reach the North Sea in the North East of England. The modern-day history of the river has been tied with the industries ...

known as or corresponds to the tribal lands of the Parisi, bordered to the west and north by the Brythonic kingdoms of

Elmet Elmet (), sometimes Elmed or Elmete, was an independent Brittonic Celtic Cumbric-speaking kingdom between about the 4th century and mid-7th century. The people of Elmet survived as a distinctly recognised Brittonic Celtic group for centuri ...

() and

Bernicia Bernicia () was an Anglo-Saxon kingdom established by Anglian settlers of the 6th century in what is now southeastern Scotland and North East England. The Anglian territory of Bernicia was approximately equivalent to the modern English cou ...

() respectively, and to the east by 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 ...

. Early Deira may have centred on

Petuaria Petuaria (or Petuaria Parisorum) was originally a Roman fort situated where the town of Brough in the East Riding of Yorkshire now stands. Petuaria means something like 'quarter' or 'fourth part', incorporating the archaic Brythonic *''petuar ...

(modern Brough) and archaeological evidence shows that the town was refortified. Petuaria was a great tribal centre for the Parisi, but declined in importance from the mid-fourth century (possibly as the harbour silted up). After this period, Derventio (modern Malton) may have functioned as the region's capital. It is not known if Deira was ever an independent Brythonic kingdom, and no British king has been identified with the area from the surviving genealogies, poems or chronicles. However the area was subject to the same fractious inheritance traditions and changing power dynamic (following the Roman withdrawal) that allowed

and Bernicia to become independent hereditary kingdoms in the early fifth century. In

Welsh literature Welsh literature is any literature originating from Wales or by Welsh writers: *Welsh-language literature Welsh-language literature () has been produced continuously since the emergence of Welsh from Brythonic as a distinct language in a ...

, Deira is part of the (The Old North) region, which was divided into many related kingdoms after the death of (Coel the Old).

Anglian Deira

The kingdom, which was previously ruled by a British dynasty, was probably created in the third quarter of the fifth century when Anglian warriors invaded the Derwent Valley. Anglian Deira's territory also extended from 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 ...

to the Tees, and from the sea to the western edge of the

Vale of York The Vale of York is an area of flat land in the northeast of England. The vale is a major agricultural area and serves as the main north–south transport corridor for Northern England. The Vale of York is a broad area of flat land in northe ...

. It later merged with the kingdom of

, its northern neighbour, to form the kingdom of

Northumbria Northumbria () was an early medieval Heptarchy, kingdom in what is now Northern England and Scottish Lowlands, South Scotland. The name derives from the Old English meaning "the people or province north of the Humber", as opposed to the Sout ...

. According to

Simeon of Durham __NOTOC__ Symeon (or Simeon) of Durham (fl. c.1090 to c. 1128 ) was an English chronicler and a monk of Durham Priory. Biography Symeon was a Benedictine monk at Durham Cathedral at the end of the eleventh century. He may have been one of 23 mon ...

(writing early in the 12th century), it extended from the

to the Tyne, but the land was waste north of the Tees. After the Brythonic kingdom centred on , which may have been called Ebrauc, was taken by King Edwin, the city of became its capital, and ("boar-place") was taken by the Angles. Archaeology suggests that the Anglian royal house was in place by the middle of the fifth century, but the first certainly recorded king is Ælla in the late sixth century. After his death, Deira was subject to king

Æthelfrith Æthelfrith (died ) was King of Bernicia from c. 593 until his death around 616 AD at the Battle of the River Idle. He became the first Bernician king to also rule the neighboring land of Deira, giving him an important place in the developme ...

of Bernicia, who united the two kingdoms into Northumbria. Æthelfrith ruled until the accession of Ælla's son Edwin, in 616 or 617, who also ruled both kingdoms until 633. Osric, the nephew of Edwin, ruled Deira after Edwin, but his son Oswine was put to death by

Oswiu Oswiu, also known as Oswy or Oswig (; c. 612 – 15 February 670), was King of Bernicia from 642 and of Northumbria from 654 until his death. He is notable for his role at the Synod of Whitby in 664, which ultimately brought the church in Northu ...

in 651. For a few years subsequently, Deira was governed by Æthelwald son of Oswald of Bernicia.D. P. Kirby, ''The Earliest English Kings'' (1991, 2000), page 78.

Bede Bede (; ; 672/326 May 735), also known as Saint Bede, Bede of Jarrow, the Venerable Bede, and Bede the Venerable (), was an English monk, author and scholar. He was one of the most known writers during the Early Middle Ages, and his most f ...

wrote of Deira in his '' Historia Ecclesiastica'' (completed in 731).

Anglian kings of Deira

Notes

References

* *Higham, N.J. (1993). ''The Kingdom of Northumbria AD 350–1100.'' Stroud: Sutton. * * * * *