The Kingdom of Wessex (c. 519-927 CE or c. 519-1066 CE) was a political entity founded by the West Saxon Chieftain Cerdic (r. 519-540 CE) in 519 CE in the Upper Thames Valley of modern-day Britain which would later evolve into the modern nation. The difference in dates concerning the end of the kingdom has to do with whether one accepts the final year as coinciding with Athelstan of Wessex becoming King of England in 927 CE (and uniting all the kingdoms under his rule) or prefers the date of the Norman Invasion of England of 1066 CE when William the Conqueror arrived. There is no consensus on one date being more accurate than the other in scholarly circles but after Athelstan became King of England, the Kingdom of Wessex ended as an independent polity and so 927 CE should be recognized as its end-date.
More about: Kingdom of WessexDefinition
Timeline
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519 - 927Duration of the Kingdom of Wessex in Britain.
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519 - 540Reign of Cerdic, first king of Wessex.
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540 - 560Reign of Cerdic's son (or grandson) Cynric who expands realm of Wessex.
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560 - 592Reign of King Ceawlin in Wessex.
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592 - 597Reign of the king Ceol in Wessex.
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597 - 611Reign of King Ceolwulf in Wessex.
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611 - 643Reign of Cynegils in Wessex; first West Saxon king to convert to Christianity and be baptized.
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611 - 643Wessex loses territory, power, and prestige to Mercia during the reign of Cynegils.
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628Wessex defeated by Mercia at the Battle of Cirenchester.
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643 - 645Reign of Cenwalh in Wessex.
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645 - 648Mercia rules Wessex after Cenwalh deposed and driven into exile.
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648 - 673Cenwalh returns from exile and resumes rule in Wessex.
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674Ceanwalh's widow Seaxburh rules Wessex; only female ruler of the region.
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674 - 676Aescwine reigns as king of Wessex; defeats Mercia at Battle of Bedwyn.
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675Battle of Bedwyn; King Aescwine of Wessex defeats Mercian army, reclaims Wessex's territory.
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676 - 685Reign of King Centwine in Wessex.
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685 - 688Caedwalla reigns in Wessex; expands region through military conquest.
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688 - 726King Ine reigns in Wessex; issues early comprehensive law code.
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726 - 740Reign of Aethelheard in Wessex.
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740 - 756Reign of King Cuthred who reestablishes Wessex's primacy in region.
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756 - 757Reign of Sigeberht in Wessex. .
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757 - 786Reign of Cynewulf in Wessex. .
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786 - 802Reign of Beorhtric in Wessex; Mercia dominates Wessex during his reign.
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802 - 839Reign of King Egbert of Wessex, Ruler of Britain; Wessex dominates region. .
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825Battle of Ellandun; Egbert of Wessex defeats Beornwulf of Mercia.
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839 - 858Reign of Aethelwulf in Wessex; Viking raids repelled.
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855 - 860Reign of Aethelbald, son of Aethelwulf;Viking raids continue.
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860 - 865Reign of Aethelberht, son of Aethelwulf, in Wessex; Viking raids continue.
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865 - 871Reign of Aethelred, son of Aethelwulf, in Wessex; Viking raids continue.
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871 - 899Reign of Alfred the Great in Wessex; Vikings defeated at Eddington and London; Wessex becomes major power in the region.
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878The Battle of Eddington; Alfred the Great defeats Viking forces.
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886Alfred the Great subdues Vikings of London.
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899 - 924Reign of Edward the Elder in Wessex; Mercia annexed.
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Aug 910The Anglo-Saxon king Edward the Elder defeats a Viking army at the Battle of Tettenhall.
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912 - 917The Anglo-Saxon king Edward the Elder campaigns against the Vikings in England.
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924 - 927Reign of Athelstan as King of the Anglo-Saxons before becoming first King of England.
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937The Battle of Brunanburh; Athelstan defeats coalition from Britain, Ireland, and Scotland; consolidates rule.