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Caer Gwinntguic was a late antique / early medieval British kingdom which had its center in the Roman city Venta Belgarum (now Winchester, Hampshire) and the historic lands of the Belgae tribe. It acquired its own form of independence at the beginning of the fifth century as a result of the Rescript of Honorius, which left the inhabitants of the westernmost area of the Saxon Shore to organize their own defense.
History
410 - The civitates of Britain revolt and expel the provincial and diocese magistrates loyal to the Imperial usurper Constantine III.
c. 465 - The Jutes from Kent invaded today's western Southampton, while the Meonware settled in the eastern area, merging with the Saxons in the early sixth century
c. 495 - ca 525 - Faced with the advance of the invaders and the founding of the kingdom of Wessex by Cerdic, Venta Belgarum blocked its south gate
c. 508 - Natan / Natanlaod / Nudd was killed by the Saxons of Wessex
