The Oxford Biblical Studies Online and Oxford Islamic Studies Online have retired. Content you previously purchased on Oxford Biblical Studies Online or Oxford Islamic Studies Online has now moved to Oxford Reference, Oxford Handbooks Online, Oxford Scholarship Online, or What Everyone Needs to Know®. For information on how to continue to view articles visit the subscriber services page.

Related Content

Related Overviews

St Oswald (c. 605—642) king of Northumbria

Cadwallon (d. 634) king of Gwynedd


More Like This

Show all results sharing these subjects:

  • History
  • Regional and National History


Show Summary Details


battle of Heavenfield

Quick Reference


Fought near Hexham. Oswald of Northumbria defeated and killed Cadwallon of Gwynedd, who had been ravaging the province after slaying Osric of Deira and Eanfrith of Bernicia (brother of Oswald) the year before. Through this victory Oswald secured his own position as king of both Bernicia and Deira and ensured that Northumbria would return to Christianity after a year of apostasy.

Reference entries