Danelaw in the context of "Viking raids"

Alfred the Great (Old English: Ælfrǣd [ˈæɫvˌræːd]; c. 849 – 26 October 899) was King of the West Saxons from 871 to 886, and King of the Anglo-Saxons from 886 until his death in 899. He was the youngest son of King Æthelwulf and Æthelwulf's first wife Osburh, who both died when Alfred was young. Three of Alfred's brothers, Æthelbald, Æthelberht and Æthelred, reigned in turn before him. Under Alfred's rule, considerable administrative and military reforms were introduced, prompting lasting change in England.

After ascending the throne, Alfred spent several years fighting Viking invasions. He won a decisive victory in the Battle of Edington in 878 and made an agreement with the Vikings, dividing England between Anglo-Saxon territory and the Viking-ruled Danelaw, which consisted of Scandinavian York, the north-east Midlands, and East Anglia. Alfred also oversaw the conversion of Viking leader Guthrum to Christianity. He defended his kingdom against the Viking attempt at conquest, becoming the dominant ruler in England. Alfred began styling himself as "King of the Anglo-Saxons" after reoccupying London from the Vikings. Details of his life are described in a work by 9th-century Welsh scholar and bishop Asser.

Old English (Englisc or Ænglisc, pronounced [ˈeŋɡliʃ] or [ˈæŋɡliʃ]), or Anglo-Saxon, is the earliest recorded form of the English language, spoken in England and southern and eastern Scotland in the Early Middle Ages. It developed from the languages brought to Great Britain by Anglo-Saxon settlers in the mid-5th century, and the first Old English literature dates from the mid-7th century. After the Norman Conquest of 1066, English was replaced for several centuries by Anglo-Norman (a type of French) as the language of the upper classes. This is regarded as marking the end of the Old English era, since during the subsequent period the English language was heavily influenced by Anglo-Norman, developing into what is now known as Middle English in England and Early Scots in Scotland.

Old English developed from a set of Anglo-Frisian or Ingvaeonic dialects originally spoken by Germanic tribes traditionally known as the Angles, Saxons and Jutes. As the Germanic settlers became dominant in England, their language replaced the languages of Roman Britain: Common Brittonic, a Celtic language; and Latin, brought to Britain by the Roman conquest. Old English had four main dialects, associated with particular Anglo-Saxon kingdoms: Kentish, Mercian, Northumbrian, and West Saxon. It was West Saxon that formed the basis for the literary standard of the later Old English period, although the dominant forms of Middle and Modern English would develop mainly from Mercian, and Scots from Northumbrian. The speech of eastern and northern parts of England was subject to strong Old Norse influence due to Scandinavian rule and settlement beginning in the 9th century.

Guthrum (Old English: Guðrum, c. 835 – c. 890) was King of East Anglia in the late 9th century. Originally a native of Denmark, he was one of the leaders of the "Great Summer Army" that arrived in Reading during April 871 to join forces with the Great Heathen Army, whose intentions were to conquer the kingdoms of Anglo-Saxon England. The combined armies were successful in conquering the kingdoms of East Anglia, Northumbria, and parts of Mercia and overran Alfred the Great's Wessex but were ultimately defeated by Alfred at the Battle of Edington in 878. The Danes retreated to their stronghold, where Alfred laid siege and eventually Guthrum surrendered.

Under the terms of his surrender, Guthrum was obliged to be baptised as a Christian to endorse the agreement and then leave Wessex. The subsequent Treaty of Alfred and Guthrum set out the boundaries between Alfred and Guthrum's territories, as well as agreements on peaceful trade and the weregild value of its people. The treaty is seen as the foundation of the Danelaw. Guthrum ruled East Anglia under his baptismal name of Æthelstan until his death.

The Viking Age (about 793–1066 CE) was the period during the Middle Ages when Norsemen known as Vikings undertook large-scale raiding, colonising, conquest, and trading throughout Europe and reached North America. The Viking Age applies not only to their homeland of Scandinavia but also to any place significantly settled by Scandinavians during the period. Although few of the Scandinavians of the Viking Age were Vikings in the sense of being engaged in piracy, they are often referred to as Vikings as well as Norsemen.

Voyaging by sea from their homelands in Denmark, Norway, and Sweden, the Norse people settled in the British Isles, Ireland, the Faroe Islands, Iceland, Greenland, Normandy, and the Baltic coast and along the Dnieper and Volga trade routes in eastern Europe, where they were also known as Varangians. They also briefly settled in Newfoundland, becoming the first Europeans to reach North America. The Norse-Gaels, Normans, Rus' people, Faroese, and Icelanders emerged from these Norse colonies. The Vikings founded several kingdoms and earldoms in Europe: the Kingdom of the Isles (Suðreyjar), Orkney (Norðreyjar), York (Jórvík) and the Danelaw (Danalǫg), Dublin (Dyflin), Normandy, and Kievan Rus' (Garðaríki). The Norse homelands were also unified into larger kingdoms during the Viking Age, and the short-lived North Sea Empire included large swathes of Scandinavia and Britain. In 1021, the Vikings achieved the feat of reaching North America—the date of which was not determined until a millennium later.

The English people are an ethnic group and nation native to England, who speak the English language, a West Germanic language, and share a common ancestry, history, and culture. The English identity began with the Anglo-Saxons, when they were known as the Angelcynn, meaning "Angle kin" or "English people". Their ethnonym is derived from the Angles, one of the Germanic peoples who settled in Britain around the 5th century AD.

The English largely descend from two main historical population groups: the West Germanic tribes, including the Angles, Saxons, and Jutes who settled in eastern and southern Britain following the withdrawal of the Western Roman Empire, and the Romano-British Brittonic speakers who already lived there. Collectively known as the Anglo-Saxons, they founded what was to become the Kingdom of England by the 10th century, in response to the invasion and extensive settlement of Danes and other Norsemen that began in the late 9th century. This was followed by the Norman Conquest and limited settlement of Normans in England in the late 11th century and a sizeable number of French Protestants who emigrated between the 16th and 18th centuries. Some definitions of English people include, while others exclude, people descended from later migration into England.

Watling Street is a historic route in England, running from Dover and London in the southeast, via St Albans to Wroxeter. The road crosses the River Thames at London and was used in Classical Antiquity, Late Antiquity, and throughout the Middle Ages. It was used by the ancient Britons and paved as one of the main Roman roads in Britannia (Roman-governed Great Britain during the Roman Empire). The line of the road was later the southwestern border of the Danelaw with Wessex and Mercia, and Watling Street was numbered as one of the major highways of medieval England.

First used by the ancient Britons, mainly between the areas of modern Canterbury and St Albans using a natural ford near Westminster, the road was later paved by the Romans. It connected the ports of Dubris (Dover), Rutupiae (Richborough Castle), Lemanis (Lympne), and Regulbium (Reculver) in Kent to the Roman bridge over the Thames at Londinium (London). The route continued northwest through Verulamium (St Albans) on its way to Viroconium Cornoviorum (Wroxeter). Watling Street is traditionally cited as having been the location of the Romans' defeat of Boudica, though precisely where on the route is disputed.

A dale is a valley, especially an open, gently-sloping ground between low hills with a stream flowing through it. It is used most frequently in Yorkshire and the Southern Uplands of Scotland; the term "fell" commonly refers to mountains or hills that flank a dale. As with many other words, dale was preserved by Viking influence in Northern England.

It appears in various contexts, such as “up hill and down dale”, “over every hill and dale”, and “up all hills, down all dales”.

Northumbrian was a dialect of Old English spoken in the Anglian Kingdom of Northumbria. Together with Mercian, Kentish and West Saxon, it forms one of the sub-categories of Old English devised and employed by modern scholars.

The dialect was spoken from the Humber, now within England, to the Firth of Forth, now within Scotland. In the Danelaw after the Viking invasions, Northumbrian may have been influenced by the Norse language.