Kingdom of Northumbria in the context of "Ubba"

Bede (/biːd/; Old English: Bēda [ˈbeːdɑ]; 672/3 – 26 May 735), also known as Saint Bede, Bede of Jarrow, the Venerable Bede, and Bede the Venerable (Latin: Beda Venerabilis), was an English monk, author and scholar. He was one of the most known writers during the Early Middle Ages, and his most famous work, Ecclesiastical History of the English People, gained him the title "The Father of English History". He served at the monastery of St Peter and its companion monastery of St Paul in the Kingdom of Northumbria of the Angles.

Born on lands belonging to the twin monastery of Monkwearmouth–Jarrow in present-day Tyne and Wear, England, Bede was sent to Monkwearmouth at the age of seven and later joined Abbot Ceolfrith at Jarrow. Both of them survived a plague that struck in 686 and killed the majority of the population there. While Bede spent most of his life in the monastery, he travelled to several abbeys and monasteries across the British Isles, even visiting the archbishop of York and King Ceolwulf of Northumbria.

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 Anglo-Scottish border is a boundary in Great Britain that separates England and Scotland. It runs for 96 miles (154 km) between Marshall Meadows Bay on the east coast and the Solway Firth in the west.

The Firth of Forth was the border between the Picto-Gaelic Kingdom of Alba and the Anglian Kingdom of Northumbria in the early 10th century. It became the first Anglo-Scottish border with the annexation of Northumbria by Anglo-Saxon England in the mid-10th century. In 973, the Scottish king Kenneth II attended the English king Edgar the Peaceful at Edgar's council in Chester. After Kenneth had reportedly done homage, Edgar rewarded Kenneth by granting him Lothian. Despite this transaction, the control of Lothian was not finally settled and the region was taken by the Scots at the Battle of Carham in 1018 and the River Tweed became the de facto Anglo-Scottish border. The Solway–Tweed line was legally established in 1237 by the Treaty of York between England and Scotland. It remains the border today, with the exception of the Debatable Lands, north of Carlisle, and a small area around Berwick-upon-Tweed, which was taken by England in 1482. Berwick was not fully annexed into England until 1746, by the Wales and Berwick Act 1746.

The Abbey Church of Saint Peter and Saint Paul, Monkwearmouth–Jarrow, known simply as Monkwearmouth–Jarrow Abbey (Latin: Monasterii Wirimutham-Gyruum), was a Benedictine double monastery in the Kingdom of Northumbria, England.

Its first house was St Peter's, Monkwearmouth, on the River Wear, founded in AD 674–5. It became a double house with the foundation of St Paul's, Jarrow, on the River Tyne in 684–5. Both Monkwearmouth (in modern-day Sunderland) and Jarrow are now in the metropolitan county of Tyne and Wear. The abbey became a centre of learning, producing one of the greatest Anglo-Saxon scholars, Bede.

The High Middle Ages of Scotland encompass Scotland in the era between the death of Domnall II in 900 AD and the death of King Alexander III in 1286, which was an indirect cause of the Wars of Scottish Independence.

At the close of the ninth century, various competing kingdoms occupied the territory of modern Scotland. Scandinavian influence was dominant in the northern and western islands, Brythonic culture in the southwest, the Anglo-Saxon or English Kingdom of Northumbria in the southeast and the Pictish and Gaelic Kingdom of Alba in the east, north of the River Forth. By the tenth and eleventh centuries, northern Great Britain was increasingly dominated by Gaelic culture, and by the Gaelic regal lordship of Alba, known in Latin as either Albania or Scotia, and in English as "Scotland". From its base in the east, this kingdom acquired control of the lands lying to the south and ultimately the west and much of the north. It had a flourishing culture, comprising part of the larger Gaelic-speaking world and an economy dominated by agriculture and trade.

Cuthbert of Lindisfarne (/ˈkʌθ.bɜːrt/) (c. 634 – 20 March 687) was a saint of the early Northumbrian church in the Celtic tradition. He was a monk, bishop and hermit, associated with the monasteries of Melrose and Lindisfarne in the Kingdom of Northumbria, today in north-eastern England and south-eastern Scotland. Both during his life and after his death, he became a popular medieval saint of Northern England, with a cult centred on his tomb at Durham Cathedral. Cuthbert is regarded as the patron saint of Northumbria. His feast days are 20 March (Catholic Church, Church of England, Eastern Orthodox Church, Episcopal Church) and 4 September (Church in Wales, Catholic Church).

Cuthbert grew up in or around Lauderdale, near Old Melrose Abbey, a daughter-house of Lindisfarne, today in Scotland. He decided to become a monk after seeing a vision on the night in 651 that Aidan, the founder of Lindisfarne, died, but he seems to have experienced some period of military service beforehand. He was made guest-master at the new monastery at Ripon, soon after 655, but had to return with Eata of Hexham to Melrose when Wilfrid was given the monastery instead. About 662 he was made prior at Melrose, and around 665 went as prior to Lindisfarne. In 684 he was made bishop of Lindisfarne, but by late 686 he resigned and returned to his hermitage as he felt he was about to die. He was probably in his early 50s.

The Codex Amiatinus, also known as the Jarrow Codex, is considered the best-preserved manuscript of the Latin Vulgate version of the Christian Bible. It was produced around 700 in the northeast of England, at the Benedictine Monkwearmouth–Jarrow Abbey in the Kingdom of Northumbria, now South Tyneside. It was one of three giant single-volume Bibles then made at Monkwearmouth–Jarrow, and is the earliest complete one-volume Latin Bible to survive, only the León palimpsest being older. It is the oldest Bible where all the biblical canon present what would be their Vulgate texts. In 716 it was taken to Italy as a gift for Pope Gregory II. It is named after the location in which it was found in modern times, Monte Amiata in Tuscany, at the Abbazia di San Salvatore and is now kept at Florence in the Biblioteca Medicea Laurenziana (Laurentian Library).

Designated by siglum A, it is commonly considered to provide the most reliable surviving representation of Jerome's Vulgate text for the books of the New Testament, and most of the Old Testament. As was standard in all Vulgate Bibles until the ninth century, the Book of Baruch is absent as is the Letter of Jeremiah, the text of the Book of Lamentations following the end of Jeremiah without a break. Ezra–Nehemiah is presented as a single book, the texts of the canonical Book of Ezra and Book of Nehemiah being continuous. Similarly the books of Samuel, Kings and Chronicles are each presented as a single book.

Oswiu, also known as Oswy or Oswig (Old English: Ōswīg; c. 612 – 15 February 670), was King of Bernicia from 642 and of Northumbria from 654 until his death. He is notable for his role at the Synod of Whitby in 664, which ultimately brought the church in Northumbria into conformity with the wider Catholic Church.

One of the sons of Æthelfrith of Bernicia and Acha of Deira, Oswiu became king following the death of his brother Oswald in 642. Unlike Oswald, Oswiu struggled to exert authority over Deira, the other constituent kingdom of medieval Northumbria, for much of his reign.

The Rulers of Bamburgh (Old English: Bebbanburh; Old Irish: Dún Guaire; Brittonic: Din Guairoi) were significant regional potentates in what is now northern England and south-eastern Scotland during the Viking Age. Sometimes referred to in modern sources as the Earldom of Bamburgh, their polity existed for roughly two centuries, beginning after the attacks on the Anglo-Saxon Kingdom of Northumbria by the Vikings in the later ninth century, and ending after the Norman Conquest later in the eleventh century. In Scottish and Irish sources of the period the Bamburgh 'earldom' is referred to as the kingship of the Northern English (or the North English kingdom), or simply of the 'Saxons'.

In essence, Bamburgh and the surrounding region (the former realm of Bernicia), the northern component of Northumbria, was ruled in succession by a shadowy series of 'kings', 'earls' (Latin duces) and 'high-reeves' (from Old English heah-gerefa). Most of these were descended from Eadwulf I of Bamburgh, thereafter called the Eadwulfings or House of Bamburgh. Several of these men commanded the whole of Northumbria, and their jurisdiction is also sometimes referred to also as the earldom of Northumbria (not to be confused with the southerly 'official' ealdordom of Northumbria based at York).