When is the Kingdom of Bernicia shown on the map?

The border data draws the Kingdom of Bernicia AD 555–611, 633, in 2 separate periods. The source samples borders at fixed dates, so a span can begin late or run on past the end.

How large was the Kingdom of Bernicia?

At its greatest extent drawn on this map, the Kingdom of Bernicia covered about 10,000 km². That is the largest area the border data gives it across the years it is drawn, not necessarily its greatest extent in history.

Europe · The successor kingdoms

Kingdom of Bernicia

drawn on the map AD 555–611, 633

Bernicia (Old Welsh Bryneich; Old English Bernice) was the northern Anglian kingdom, extending from the Tees toward the Forth, with its citadel at Bamburgh and the holy island of Lindisfarne offshore. Its traditional founder was Ida (r. from c. 547), who according to the Chronicle seized Bamburgh.

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Shown on the map: AD 555–611, 633 (2 periods)
Peak area: 10k km²
Region: Europe

Names and origin

Rise and union with Deira

Ida's grandson Æthelfrith (r. c. 593–616) was the first ruler to unite Bernicia with its southern neighbour Deira, forging the greater kingdom of Northumbria; he exiled the Deiran prince Edwin and crushed the Dál Riatan king Áedán mac Gabráin at Degsastan (603) and the Britons at Chester (c. 616). Æthelfrith fell at the River Idle (c. 616) to Rædwald, and Edwin (of the Deiran line) took the throne. After Edwin's death (633) the Bernician line returned under Oswald and Oswiu. By the end of Ecgfrith's reign (670–685) the Deiran royal line had been extinguished in the male line and Deira fully integrated into Northumbria.

Religion

Though Paulinus had evangelised in the province, the decisive conversion of Bernicia came under Oswald, through Irish monks from Iona who established Lindisfarne under St Aidan. Bernicia's later history is subsumed into Northumbria, and after the Viking conquest of York its northern rump survived as the earldom/lordship centred on Bamburgh.

Common questions

What was the Kingdom of Bernicia?: Bernicia (Old Welsh Bryneich; Old English Bernice) was the northern Anglian kingdom, extending from the Tees toward the Forth, with its citadel at Bamburgh and the holy island of Lindisfarne offshore. Its traditional founder was Ida (r. from c. 547), who according to the Chronicle seized Bamburgh.
When is the Kingdom of Bernicia shown on the map?: The border data draws the Kingdom of Bernicia AD 555–611, 633, in 2 separate periods. The source samples borders at fixed dates, so a span can begin late or run on past the end.
How large was the Kingdom of Bernicia?: At its greatest extent drawn on this map, the Kingdom of Bernicia covered about 10,000 km². That is the largest area the border data gives it across the years it is drawn, not necessarily its greatest extent in history.
Who ruled the Kingdom of Bernicia?: Ida's grandson Æthelfrith (r. c. 593–616) was the first ruler to unite Bernicia with its southern neighbour Deira, forging the greater kingdom of Northumbria; he exiled the Deiran prince Edwin and crushed the Dál Riatan king Áedán mac Gabráin at Degsastan (603) and the Britons at Chester (c. 616). Æthelfrith fell at the River Idle (c. 616) to Rædwald, and Edwin (of the Deiran line) took the throne.
What did the economy and culture of the Kingdom of Bernicia rest on?: Though Paulinus had evangelised in the province, the decisive conversion of Bernicia came under Oswald, through Irish monks from Iona who established Lindisfarne under St Aidan. Bernicia's later history is subsumed into Northumbria, and after the Viking conquest of York its northern rump survived as the earldom/lordship centred on Bamburgh.

Sources

This compendium cites its sources once for the whole document rather than per territory. Its bibliography names the English Wikipedia articles for each kingdom as the primary basis, with Encyclopædia Britannica, the World History Encyclopedia, national heritage bodies (Historic Environment Wales and Scotland, the Clwyd-Powys Archaeological Trust), museum sources and the Dictionary of Irish Biography, read against the Anglo-Saxon Chronicle, Bede and the Irish annals with their own biases. The article this entry is anchored on:

Wikipedia — Bernicia en.wikipedia.org/wiki/Bernicia

This entry was last updated 27 September 2026.

This entry was researched and drafted with AI from the sources above, and has not been reviewed by a historian. How entries are made

Text available under CC BY-SA 4.0: reuse it with a credit to The World Through Time and a link to this page. Passages drawing on the Wikipedia articles listed above are also licensed CC BY-SA 4.0 by their contributors.

Border geometry for the map itself comes from Cliopatria v0.12 (Seshat Global History Databank, CC-BY-4.0).

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