Council · 664 · 25 September
Synod of Whitby
Whitby settled which wider Christian calendar Northumbria would follow. The dispute over Easter dating and tonsure sounds small, but it represented a larger choice between Irish monastic customs and Roman practice. King Oswiu chose Rome, bringing Northumbria into closer alignment with the continental church. Bede tells the story because, for him, unity in worship and time mattered to the shape of an English church.

At a glance
- Type
- Council
- Date remembered
- 25 September, AD 664
- What kind of event is this?
- A council or settlement that changed the church's public teaching, discipline, or historical direction.
- Key line
- Northumbria chose the Roman calendar.
Highlights
- Easter dating was disputed.
- Irish and Roman customs competed.
- King Oswiu chose Rome.
- Bede preserved the story.
How it happened
What happened
Northumbrian leaders met at Whitby to decide between Irish and Roman customs.
The argument
The visible issue was Easter dating and tonsure; the deeper issue was which wider communion Northumbria would follow.
What changed
King Oswiu chose Roman practice.
Why it matters
Whitby aligned Northumbria more closely with the Roman and continental church.
Aftermath
Bede made the synod a key moment in his account of English ecclesiastical unity.
People in the story
Recommended reading
Primary texts from figures tied to this event.
Bede the Venerable
Ecclesiastical History of the English People · 731
Foundational history of England's Christianization — five books from Gregory's mission to Bede's day.
