'Dumnonia' was a
Brythonic kingdom of
sub-Roman Britain, located in the
south-west peninsula of modern
England and covering
Devon, most of
Somerset and possibly part of
Dorset, its eastern boundary being uncertain.
Cornwall may or may not have been part of Dumnonia.
Name
The kingdom is named for the
Dumnonii, a
Celtic tribe who lived in the same area long before the
Romans arrived in
Britain. It is unclear whether it was a single united kingdom or simply a series of sub-kingdoms. Certainly
Cornwall appears to have been at least semi-independent at times, possibly because it was based on the territory of a sub-tribe, the
Cornovii.
''Dumnonia'' is the
Latin form of the name. Variants include ''Damnonia'' and ''Domnonia''. It was known to the
English of neighbouring
Wessex as the kingdom of the ''West Welsh''. In
Welsh, and similarly in the
native Brythonic language, it was ''Dyfneint'' and this is the form which survives today in the name of the county of
Devon (Modern
Welsh: ''Dyfnaint'',
Cornish: ''Dewnans'').
Character
Dumnonia is noteworthy for its many settlements which have survived from
Romano-British times. As in other
Brythonic areas,
Iron Age hillforts, such as
Cadbury Castle, were refortified for the use of lords or kings. Other high-status settlements like
Tintagel were built a-new. Post-Roman imported pottery has been excavated from many sites across the region.
The people of Dumnonia would have spoken a
Brythonic dialect similar to the ancestor of modern
Cornish.
Irish immigrants are also in evidence from the
Ogham inscribed stones they have left behind.
Christianity
Christianity also seems to have survived in Dumnonia from the
Romano-British era, with a number of late Roman Christian cemeteries extending into the sub-Roman period. The religion was boosted by evangelists from
Ireland, like
Saint Piran, and
Wales, like
Saint Petroc or
Saint Keyne. There were important monasteries at
Bodmin and
Glastonbury; and also
Exeter where
5th century burials discovered near the
cathedral probably represent the cemetery of the foundation attended by
St. Boniface (although whether this was
Anglo-Saxon or
Brythonic is somewhat controversial).
Kings of Dumnonia
There are odd records of several apparent ''kings of Dumnonia'' and several of these appear in a pedigree of the monarchs recorded in
Old Welsh sources which may be reconstructed thus:
★ Cynfawr – whose name occurs on the famous ''Drustanus'' stone near
Fowey in
Cornwall.
★ Custennyn Gorneu – supposed grandfather of Arthur (see below)
★
Erbin – father of Geraint (see below)
★
Geraint – probably the man at the
Battle of Llongborth
★ Cado – who appears in the ''Life of St Carannog ''
Traditionally, Cado’s son was Constantine of Dumnonia, the man reproached by the contemporary writer,
Gildas, in the early
6th century. He may be the same as St.
Constantine of Cornwall. A later King Geraint appears in the ''Life of St
Teilo'' and may be the same man mentioned in the poem
Y Gododdin at the
Battle of Catraeth (
Catterick) around
600. A third
King Geraint corresponded with Saint
Aldhelm and fought King
Ine of Wessex in
710.
Arthurian connection
The renowned
King Arthur is often said to have been a member of the Royal house of Dumnonia, his traditional grandfather, Constantine, being identified with ''Custennyn Gorneu'' above. Erbin and his son,
Geraint, appear in the Arthurian tale of ''Geraint and Enid'' as ruling "on the far side of Severn" (from
Caerleon).
Gildas’ Constantine of Dumnonia appears in Arthurian legend as the great King’s successor,
Constantine III of Britain.
It is claimed by some that Arthur's great victory at the
Battle of Mount Badon, took place in Devon where the Brythonic Dumnonians fought off
Anglo-Saxons. Most historians, however, believe this battle was fought elsewhere, near
Bath for example. His final
Battle of Camlann, is also said to have been fought at
Slaughter Bridge near
Camelford.
Territorial reduction
Conflict between Dumnonia and the
Anglo-Saxons of
Wessex began to increase in the
7th century. By
658, it lost the part of Somerset east and north of the
River Parrett and the rest of the modern county fell in
710. Devon was overrun by the end of the century. The medieval
Breton toponyms of
Domnonée and
Cornouaille/Kernev were probably founded by emigrants from Devon and Cornwall during this period.
William of Malmesbury reported that
Brythons were living alongside Saxon people in
Exeter during the
10th century, but King
Athelstan put a stop to this. (A part of Exeter retained the title '
Little Britain' until the
18th century.) The same monarch set the modern eastern border of Cornwall in
927. However, the
Brythons of the far west survived with at least some degree of independence as the
Kingdom of Cornwall.
References
★ Christopher A. Snyder (2003), ''The Britons''
See also
★
Dumnonii
★
Kingdom of Cornwall
★
List of legendary kings of Britain
★
Domnonia
External links
★
Early British Kingdoms: Kingdoms of the West Country
★
Early British Kingdoms: Kings of Dumnonia
★ The History Files:
Ancient Dumnonia
★ The History Files:
Post-Roman Celtic Kingdoms: Dumnonia