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.
|Chief of the Region|
|Historical era||Sub-Roman Britain|
- 410 - The civitates of Britain revolt and expel the provincial and diocese magistrates loyal to the Imperial usurper Constantine III.
- c. 440s - Possibly reign of Elafius / Elaf, mentioned by Saint Germanus who convinced the sovereign to renounce the heresy of Pelagius to embrace Roman Catholicism.
- 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
- 508 - Saxons of Wessex defeated the Britons of Natanlaod at Southampton Water
- 552 - Caer Gwinntguic falls to or is assimilated into the Kingdom of Wessex, who settled on the borders of the kingdom of Caer Celemion
- ^ "Caer Gwinntguic / Venta Belgarum (Romano-Britons)". The History Files. Kessler Associates. Retrieved 17 October 2022.
- ^ Nennius (attrib.). Theodor Mommsen (ed.). Historia Brittonum, VI. Composed after AD 830. (in Latin) Hosted at Latin Wikisource.
- ^ Cooper, David (July 30, 2018). Badon and the Early Wars for Wessex, circa 500 to 710. Pen & Sword Books. ISBN 9781526733580. Retrieved 17 October 2022.