Causantín mac Cináeda was a king of the Picts. He is often known as Constantine I in reference to his place in modern lists of Scottish monarchs, but contemporary sources described Causantín only as a Pictish king. A son of Cináed mac Ailpín, he succeeded his uncle Domnall mac Ailpín as Pictish king following the latter's death on 13 April 862. It is likely that the reign of Causantín witnessed increased activity by Vikings, based in Ireland, Northumbria and northern Britain. He died fighting one such invasion.
Year 867 (DCCCLXVII) was a common year starting on Wednesday of the Julian calendar.
Northumbria was an early medieval Anglian kingdom in what is now Northern England and South Scotland.
The Danelaw was the part of England between the early tenth century and the Norman Conquest under Anglo-Saxon rule in which Danish laws applied. The Danelaw originated in the conquest and occupation of large parts of eastern and northern England by Danish Vikings in the late ninth century. The term applies to the areas in which English kings allowed the Danes to keep their own laws following the tenth-century English conquest in return for the Danish settlers' loyalty to the English crown. "Danelaw" is first recorded in the early 11th century as Dena lage.
Scandinavian York or Viking York is a term used by historians for what is now Yorkshire during the period of Scandinavian domination from late 9th century until it was annexed and integrated into England after the Norman Conquest; in particular, it is used to refer to York, the city controlled by these kings and earls. The Kingdom of Jórvík was closely associated with the longer-lived Kingdom of Dublin throughout this period.
Ivar the Boneless, also known as Ivar Ragnarsson, was a Viking leader who invaded England and Ireland. According to the Tale of Ragnar Lodbrok, he was the son of Aslaug and her husband Ragnar Loðbrok, and was the brother of Björn Ironside, Halvdan, Sigurd Snake-in-the-Eye, and Ragnvald. However, it is not known whether or not this is historically accurate. Ivar is sometimes regarded as the same person as Ímar, a Viking king of Dublin between 870 and 873. He might have been born in Uppsala, Sweden in about 787.
Halfdan Ragnarsson was a Viking leader and a commander of the Great Heathen Army which invaded the Anglo-Saxon kingdoms of England, starting in 865.
Ælla was King of Northumbria, a kingdom in medieval England, during the middle of the 9th century. Sources on Northumbrian history in this period are limited, and so Ælla's ancestry is not known, and the dating of the beginning of his reign is questionable.
This timeline summarises significant events in the history of Northumbria and Northumberland.
Eadwulf I was ruler of Bamburgh in the early tenth century. A genealogy in the twelfth-century text De Northumbria post Britannos recording the ancestry of Waltheof Earl of Northampton, makes Eadwulf the son of Æthelthryth daughter of Ælla, King of Northumbria, but no source names Eadwulf's own father.
Ealdred was a ruler of Bamburgh, at least part of the former kingdom of Bernicia in northern Northumbria, in the early tenth century. He was the son of Eadwulf.
The Great Heathen Army, also known as the Viking Great Army, was a coalition of Scandinavian warriors who invaded England in 865 AD. Since the late 8th century, the Vikings had been engaging in raids on centres of wealth, such as monasteries. The Great Heathen Army was much larger and aimed to conquer and occupy the four kingdoms of East Anglia, Northumbria, Mercia and Wessex.
Oswulf was ruler of Bamburgh and subsequently, according to later tradition, commander of all Northumbria under the lordship of King Eadred of England. He is sometimes called "earl" or "high reeve", though the precise title of the rulers of Bamburgh is unclear. By the twelfth century Oswulf was held responsible for the death of Northumbria's last Norse king, Eric of York, subsequently administering the Kingdom of York on behalf of Eadred.
Ubba was a 9th-century Viking and one of the commanders of the Great Heathen Army that invaded Anglo-Saxon England in the 860s. The Great Army appears to have been a coalition of warbands drawn from Scandinavia, Ireland, the Irish Sea region and Continental Europe. There is reason to suspect that a proportion of the Viking forces specifically originated in Frisia, where some Viking commanders are known to have held fiefdoms on behalf of the Franks. Some sources describe Ubba as dux of the Frisians, which could be evidence that he also associated with a Frisian benefice.
Rædwulf was king of Northumbria for a short time. His ancestry is not known, but it is possible that he was a kinsman of Osberht and Ælla.
Osberht was king of Northumbria in the middle of the 9th century. Sources on Northumbrian history in this period are limited. Osberht's descent is not known and the dating of his reign is problematic.
Ecgberht was king of Northumbria in the middle of the 9th century. This period of Northumbrian history is poorly recorded, and very little is known of Ecgberht.
Ricsige was King of Northumbria from 873 to 876. He became king after Ecgberht I was overthrown and fled, with Wulfhere, Archbishop of York, to Mercia.
Events from the 9th century in England.
