Period
Date
Comment
Roman
402
Stilicho recalls one of the two British legions to assist with the defense of Italy against Alaric and the Visigoths . The barbarians were defeated, this time, at the battle of Pollentia (Apr 06).
406
Jan - A combined barbarian force of Suevi, Alans, Vandals, and Burgundians (Germanic tribes) swept into central Gaul, severing contact between Rome and Britain.
Aug 23 - Battle at Florence: Stilicho's Roman army beats Radagaisus' Barbarians.
Autumn - The
remaining Roman army in Britain mutinies. Marcus was proclaimed emperor in Britain, but was immediately assassinated.
407
Constantine III is hailed as emperor by the Roman garrison in Britian. He crossed the English Channel to the continent at Bononia (Boulogne-sur-Mer in northern France), and historians have assumed he took with him all of the mobile troops left in Britain, thus denuding the province of any military protection and explaining their disappearance. Constantine's departure could be what Nennius called "the end of the Roman Empire in Britain. . ."
408
With both Roman legions withdrawn, Britain endures devastating attacks by the Picts, Scots and Saxons .
409
Under enormous pressure, Britons take matters into their own hands, expelling weak Roman officials and fighting for themselves.
410
Britons send a plea for assitance against local barbarian incursions to Honorius - he tells them to defend themselves as best they can. Traditional ending of Roman Britain.
First independant king of Dumnonia
Guoremor (Gwrfawr/Vorimorus).
Dark-Ages
413
Pelagian heresy said to have begun, by Prosper (Tiro) of Aquitaine in his Chronicle .
418
May 1 - Pelagianism condemned at the Council of Carthage .
420
Death of Coel Hen , probably the last Roman Dux Brittanniarum, at Ebruac (Eburacum/York) the Roman capital of the North. The Kingdom of Northern Britain splits - Cerneu retains Ebruac in the kingdom of Northern Britain; Gorbanian takes Bernaccia (Bryneich/Berneich).
425
Wortigernos/Vitalinus becomes the most powerful man in Britain and rules with a Council of representatives (proto-princes) from the Civitates and other emerging centres of regional power. He changes his name to Vortigern 'highest ruler among other rulers'.
428
Vortigern invites a number of Germanic warriors to aid him in consolidating his position in Britain according to the Historia Brittonum .
429
From Prosper's "Chronicle": Agricola, a Pelagian, the son of the Pelagian bishop Severianus, corrupted the British churches by the insinuation of his doctrine. But at the persuasion of the deacon Palladius, Pope Celestine sent Germanus, bishop of Auxerre, as his representative, and having rejected the heretics, directed the British to the catholic faith.
431
From Prosper's "Chronicle": Palladius was sent by Pope Celestine to the Scots [i.e. Irish] who believed in Christ, and was ordained as their first bishop.
433
Prosper again takes up the Pelagian heresy controversy in his "De Gratia Dei et libero arbitrio; liber contra collatorem". The date of this, the most important of Prosper's prose writings, can be fixed at about 433, for the author speaks of twenty years and more, having elapsed since the beginning of the Pelagian heresy, viz., according to his "Chronicle", A.D. 413.
439
The Battle of Guoloph (often identified with Wallop, 15 km ESE of Amesbury near Salisbury) between Vitolinus and Ambrosius Aurelianus as dated by the Historia Brittonum. Vitolinus may have represented the Pelagian/Celtic tradition while Ambrosius headed the 'pro-Roman' one.
440
Period of Civil War and famine in Britain begins, caused by ruling council's weakness and inability to deal with Pictish invasions; situation aggravated by tensions between Pelagian/Roman factions. Vacated towns and cities in ruin. Migration of pro-Roman citizens toward west.
Early Anglo-Saxon
441
A Gallic Chronicle records, prematurely, that "Britain, abandoned by the Romans, passed into the power of the Saxons."
443
On the death of Constantine Corneu, King of Dumnonia the kingdom is split. Dumnonia remains to be ruled by Erbin; Cornubia (Cerniw) now ruled by Merchion.
446
Britons (probably the pro-Roman party) appeal to Aetius, Roman governor of Gaul, for military assistance in their struggle against the Picts and the Irish/Scots. No help could be sent, at this time, as Aetius had his hands full with Attila the Hun.
Vortigern authorizes the use of Saxon mercenaries, known as foederati, for the defence of the northern parts against barbarian attack and to guard against further Irish incursions. The Saxons are given a little land in Lincolnshire.
550
Main tribal dynasties established
597
Augustine arrives from Rome an converts Ethelbert, King of Kent, to Christianity
625
Sutton Hoo Ship Burial
650
 
Middle Saxon
730
Bede begins writing his 'History of the English Church and People'
784
King Offa and Charlemagne of France exchange letters
Viking-Age
789
First landing of Northmen in England
793
'Heathen men' destroy the church at Lindisfarne
735
Bede dies
850
 
Late Saxon
874
Vikings begin to settle in England
878
King Alfred defeats the Vikings
890
Alfred commences the writing of the Anglo-Saxon Chronicle
900
 
973
Edgar is crowned King of all England
1016
Cnut of Denmark takes the English throne
1066
William of Normandy takes the English throne
 
1100
 
 

Sources:
The North Folk: Angles, Saxons, Danes - Richard Bond, Kenneth Penn and Andrew Rogerson
The Anglo-Saxon Chronicle - translated and collated by Anne Savage
Saxons, Vikings and the Norman Conquest - Ray Mitchell and Geoffrey Middleton
The Anglo-Saxons - Rowena Loverance

© Rosie Wilkin 2003
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