The Synod of Whitby was a Christian administrative gathering held in Northumbria in 664, wherein King Oswiu ruled that his kingdom would calculate Easter and observe the monastic tonsure according to the customs of Rome rather than the customs practiced by Irish monks at Iona and its satellite institutions. The synod was summoned at Hilda's double monastery of Streonshalh (Streanæshalch), later called Whitby Abbey.
A manuscript of Bede's Historia Ecclesiastica gentis Anglorum.
Northumbria was an early medieval Anglo-Saxon kingdom in what is now Northern England and south-east Scotland.
Page from the Lindisfarne Gospels, c. 700, featuring zoomorphic knot-work.
The colophon to the Gospel of Matthew from the Durham Gospel Fragment, featuring non-zoomorphic interlace patterns.
The Book of Kells, (folio 292r), c. 800, showing the lavishly decorated text that opens the Gospel of John
Sword pommel from the Bedale Hoard, inlaid with gold foil.