Bede, as I mentioned in my school sermon, was a great computist, "computus" being the art of calculating times and in particular the times of the Christian calendar. It was a major topic of interest in the Middle Ages - cue the Synod of Whitby - and is a popular subject of scholarly study now. You might think that everything that could be said about the Synod of Whitby had been said by now, but the journal Peritia has kindly put a new article on free access to 31 July in which Erin T Dailey argues convincingly that this was not just a matter of Rome 1 Iona 0, but

  • there were not 2 but 3 factions, since the Roman computus had just been updated to a new model - which was the one that won out
  • the bloody politics of the Northumbrian royal families was in play too, with Oswiu cleverly getting his judgment in first before his son Alchfrith (who was about to go on pilgrimage to Rome) could trump him

If you like the Anglo-Saxon period, you'll love the article, though it's not a quick read.

Erin T. Dailey, ‘To choose one Easter from three: Oswiu’s decision and the Northumbrian synod of AD 664’, Peritia 26 (2015) 47-64.