Viking Age
Overview

The earliest date given for the coming of Vikings to England is 789 during the reign of King Beorhtric of Wessex. According to the Anglo-Saxon Chronicle three Norwegian boats from Hordaland (Old Norse: Hǫrðalandi) landed at the Isle of Portland off the coast of Dorset. They apparently were mistaken for merchants by a royal official, Beaduhard, a king's reeve who attempted to force them to come to the king's manor, whereupon they killed the reeve and his men. The beginning of the Viking Age in the British Isles is often set at 793. It was recorded in the Anglo–Saxon Chronicle that the Northmen raided the important island monastery of Lindisfarne (the generally accepted date is actually 8 June, not January):

A.D. 793. This year came dreadful fore-warnings over the land of the Northumbrians, terrifying the people most woefully: these were immense sheets of light rushing through the air, and whirlwinds, and fiery dragons flying across the firmament. These tremendous tokens were soon followed by a great famine: and not long after, on the sixth day before the ides of January in the same year, the harrowing inroads of heathen men made lamentable havoc in the church of God in Holy-island (Lindisfarne), by rapine and slaughter.

In 794, according to the Annals of Ulster, a serious attack was made on Lindisfarne's mother-house of Iona, which was followed in 795 by raids upon the northern coast of Ireland. From bases there, the Norsemen attacked Iona again in 802, causing great slaughter amongst the Céli Dé Brethren, and burning the abbey to the ground.

The Vikings primarily targeted Ireland until 830, as England and the Carolingian Empire were able to fight the Vikings off. However, after 830 CE, the Vikings had considerable success against England, the Carolingian Empire, and other parts of Western Europe. After 830, the Vikings exploited disunity within the Carolingian Empire, as well as pitting the English kingdoms against each other.

The Kingdom of the Franks under Charlemagne was particularly devastated by these raiders, who could sail up the Seine with near impunity. Near the end of Charlemagne's reign (and throughout the reigns of his sons and grandsons), a string of Norse raids began, culminating in a gradual Scandinavian conquest and settlement of the region now known as Normandy in 911. Frankish King Charles the Simple granted the Duchy of Normandy to Viking warleader Rollo (a chieftain of disputed Norwegian or Danish origins) in order to stave off attacks by other Vikings. Charles gave Rollo the title of duke. In return, Rollo swore fealty to Charles, converted to Christianity, and undertook to defend the northern region of France against the incursions of other Viking groups. Several generations later, the Norman descendants of these Viking settlers not only identified themselves as Norman, but also carried the Norman language (either a French dialect or a Romance language which can be classified as one of the Oïl languages along with French, Picard and Walloon), and their Norman culture, into England in 1066. With the Norman Conquest, they became the ruling aristocracy of Anglo–Saxon England.

The clinker -built longships used by the Scandinavians were uniquely suited to both deep and shallow waters. They extended the reach of Norse raiders, traders, and settlers along coastlines and along the major river valleys of north-western Europe. Rurik also expanded to the east, and in 859 became ruler either by conquest or invitation by local people of the city of Novgorod (which means "new city") on the Volkhov River. His successors moved further, founding the early East Slavic state of Kievan Rus' with the capital in Kiev. This persisted until 1240, when the Mongols invaded Kievan Rus'.

Other Norse people continued south to the Black Sea and then on to Constantinople. The eastern connections of these " Varangians " brought Byzantine silk, a cowrie shell from the Red Sea, and even coins from Samarkand, to Viking York.

In 884, an army of Danish Vikings was defeated at the Battle of Norditi (also called the Battle of Hilgenried Bay) on the Germanic North Sea coast by a Frisian army under Archbishop Rimbert of Bremen-Hamburg, which precipitated the complete and permanent withdrawal of the Vikings from East Frisia. In the 10th and 11th centuries, Saxons and Slavs began to use trained mobile cavalry successfully against Viking foot soldiers, making it hard for Viking invaders to fight inland.

In Scandinavia, the Viking Age is considered by some scholars to have ended with the establishment of royal authority and the establishment of Christianity as the dominant religion. Scholars have proposed different end dates for the Viking Age, but many argue it ended in the 11th century. The year 1000 is sometimes used, as that was the year in which Iceland converted to Christianity, marking the conversion of all of Scandinavia to Christianity. The death of Harthacnut, the Danish King of England, in 1042 has also been used as an end date. History does not often allow such clear-cut separation between arbitrary "ages", and it is not easy to pin down a single date that applies to all the Viking world. The Viking Age was not a "monolithic chronological period" across three or four hundred years, but was characterised by various distinct phases of Viking activity. It is unlikely that the Viking Age could be so neatly assigned a terminal event. The end of the Viking era in Norway is marked by the Battle of Stiklestad in 1030, in which Óláfr Haraldsson (later known as Olav the Holy), a fervent Christianiser who dealt harshly with those suspected of clinging to pagan cult, was killed. Although Óláfr's army lost the battle, Christianity continued to spread, and after his death he became one of the subjects of the three miracle stories given in the Manx Chronicle. In Sweden, the reign of king Olof Skötkonung (c. 995–1020) is considered to be the transition from the Viking Age to the Middle Ages, because he was the first Christian king of the Swedes, and he is associated with a growing influence of the church in what is today southwestern and central Sweden. Norse beliefs persisted until the 12th century; Olof was the last king in Scandinavia to adopt Christianity.

The end of the Viking Age is traditionally marked in England by the failed invasion attempted by the Norwegian king Harald III (Haraldr Harðráði), who was defeated by Saxon King Harold Godwinson in 1066 at the Battle of Stamford Bridge; in Ireland, the capture of Dublin by Strongbow and his Hiberno-Norman forces in 1171; and 1263 in Scotland by the defeat of King Hákon Hákonarson at the Battle of Largs by troops loyal to Alexander III. Godwinson was subsequently defeated within a month by another Viking descendant, William, Duke of Normandy. Scotland took its present form when it regained territory from the Norse between the 13th and the 15th centuries; the Western Isles and the Isle of Man remained under Scandinavian authority until 1266. Orkney and Shetland belonged to the king of Norway as late as 1469. Consequently, a "long Viking Age" may stretch into the 15th century.
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