page_title: History of Anglo-Saxon England
section_title: Viking challenge and the rise of Wessex (9th century)
hierarchical_section_title: History of Anglo-Saxon England / Viking challenge and the rise of Wessex (9th century)
caption_attribution_description: English: City Walls, Winchester. Saxon and medieval work on Roman foundations.
context_page_description: Anglo-Saxon England was early medieval England, existing from the 5th to the 11th centuries from the end of Roman Britain until the Norman conquest in 1066. It consisted of various Anglo-Saxon kingdoms until 927 when it was united as the Kingdom of England by King Æthelstan. It became part of the short-lived North Sea Empire of Cnut the Great, a personal union between England, Denmark and Norway in the 11th century.
  The Anglo-Saxons were the members of Germanic-speaking groups who migrated to the southern half of the island of Great Britain from nearby northwestern Europe. Anglo-Saxon history thus begins during the period of sub-Roman Britain following the end of Roman control, and traces the establishment of Anglo-Saxon kingdoms in the 5th and 6th centuries, their Christianisation during the 7th century, the threat of Viking invasions and Danish settlers, the gradual unification of England under the Wessex hegemony during the 9th and 10th centuries, and ending with the Norman conquest of England by William the Conqueror in 1066.
context_section_description: Between the 8th and 11th centuries, raiders and colonists from Scandinavia, mainly Danish and Norwegian, plundered western Europe, including the British Isles. These raiders came to be known as the Vikings; the name is believed to derive from Scandinavia, where the Vikings originated. The first raids in the British Isles were in the late 8th century, mainly on churches and monasteries (which were seen as centres of wealth). The Anglo-Saxon Chronicle reports that the holy island of Lindisfarne was sacked in 793. The raiding then virtually stopped for around 40 years; but in about 835, it started becoming more regular.
  In the 860s, instead of raids, the Danes mounted a full-scale invasion. In 865, an enlarged army arrived that the Anglo-Saxons described as the Great Heathen Army. This was reinforced in 871 by the Great Summer Army. Within ten years nearly all of the Anglo-Saxon kingdoms fell to the invaders: Northumbria in 867, East Anglia in 869, and nearly all of Mercia in 874–77. Kingdoms, centres of learning, archives, and churches all fell before the onslaught from the invading Danes. Only the Kingdom of Wessex was able to survive. In March 878, the Anglo-Saxon King of Wessex, Alfred, with a few men, built a fortress at Athelney, hidden deep in the marshes of Somerset. He used this as a base from which to harry the Vikings. In May 878 he put together an army formed from the populations of Somerset, Wiltshire, and Hampshire, which defeated the Viking army in the Battle of Edington. The Vikings retreated to their stronghold, and Alfred laid siege to it. Ultimately the Danes capitulated, and their leader Guthrum agreed to withdraw from Wessex and to be baptised. The formal ceremony was completed a few days later at Wedmore. There followed a peace treaty between Alfred and Guthrum, which had a variety of provisions, including defining the boundaries of the area to be ruled by the Danes (which became known as the Danelaw) and those of Wessex. The Kingdom of Wessex controlled part of the Midlands and the whole of the South (apart from Cornwall, which was still held by the Britons), while the Danes held East Anglia and the North.
  After the victory at Edington and resultant peace treaty, Alfred set about transforming his Kingdom of Wessex into a society on a full-time war footing. He built a navy, reorganised the army, and set up a system of fortified towns known as burhs. He mainly used old Roman cities for his burhs, as he was able to rebuild and reinforce their existing fortifications. To maintain the burhs, and the standing army, he set up a taxation system known as the Burghal Hidage. These burhs (or burghs) operated as defensive structures. The Vikings were thereafter unable to cross large sections of Wessex: the Anglo-Saxon Chronicle reports that a Danish raiding party was defeated when it tried to attack the burh of Chichester.
  Although the burhs were primarily designed as defensive structures, they were also commercial centres, attracting traders and markets to a safe haven, and they provided a safe place for the king's moneyers and mints.  A new wave of Danish invasions commenced in 891, beginning a war that lasted over three years. Alfred's new system of defence worked, however, and ultimately it wore the Danes down: they gave up and dispersed in mid-896.
  Alfred is remembered as a literate king. He or his court commissioned the Anglo-Saxon Chronicle, which was written in Old English (rather than in Latin, the language of the European annals). Alfred's own literary output was mainly of translations, but he also wrote introductions and amended manuscripts.
caption: The walled defence round a burgh. Alfred's capital, Winchester. Saxon and medieval work on Roman foundations.[94]
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