Cadwallon is a Welsh name derived from the

Common Brittonic Common Brittonic (; ; ), also known as British, Common Brythonic, or Proto-Brittonic, is a Celtic language historically spoken in Britain and Brittany from which evolved the later and modern Brittonic languages. It is a form of Insular Cel ...

''*Katuwellaunos'' (

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 ...

*''Katu-welnā-mnos'') "The One Who (-mnos) Leads (welnā-) in Battle (katu-)". The same name belonged to the

Catuvellauni The Catuvellauni (Common Brittonic: *''Catu-wellaunī'', "war-chiefs") were a Celtic tribe or state of southeastern Britain before the Roman conquest, attested by inscriptions into the 4th century. The fortunes of the Catuvellauni and thei ...

who lived in what is now

Hertfordshire Hertfordshire ( or ; often abbreviated Herts) is a ceremonial county in the East of England and one of the home counties. It borders Bedfordshire to the north-west, Cambridgeshire to the north-east, Essex to the east, Greater London to the ...

, one of the most powerful British polities in the

Late Iron Age The Iron Age () is the final epoch of the three historical Metal Ages, after the Chalcolithic and Bronze Age. It has also been considered as the final age of the three-age division starting with prehistory (before recorded history) and progr ...

who led the resistance against the Romans in 43 CE and possibly against Caesar in 55 and 54 BCE as well. ''Cadwallon'' is not to be confused with ''Caswallon'', which derives from ''*Kađđi-welnā-mnos'' (the same name as Cassivellaunus), meaning "The Passionate Leader". Note that in Cornish, both ''Katuwellaunos''(/Catuvellaunus) and ''Kađđiwellaunos''(/Cassivellaunus) give the form Kaswallon, which adds to the confusion. Cadwallon may refer to: * Cadwallon Lawhir ap Einion (reigned early 6th century), King of Gwynedd *

Cadwallon ap Cadfan Cadwallon ap Cadfan (died 634)A difference in the interpretation of Bede's dates has led to the question of whether Cadwallon was killed in 634 or the year earlier, 633. Cadwallon died in the year after the Battle of Hatfield Chase, which Bede ...

(reigned early 7th century), King of Gwynedd * Cadwallon ab Owain (died ), prince of Deheubarth * Cadwallon ab Ieuaf (died 986), King of Gwynedd * Cadwallon ap Gruffydd (12th century), son of Gruffudd ap Cynan * Cadwallon ap Madog (12th century), ruler of Maelienydd * ''Cadwallon'' (role-playing game), a 2006 game published by Rackham *

Cædwalla Cædwalla (; 659 – 20 April 689) was the King of Wessex from approximately 685 until he abdicated in 688. His name is derived from the Welsh Cadwallon. He was exiled from Wessex as a youth and during this period gathered forces and attac ...

(c. 659 – 689), King of Wessex (''Cædwalla'' is the Old English spelling of ''Cadwalla'' (< Brythonic ''*Katuwallios''), an alternative form of the same name.)

See also