865. Æthelberht of Wessex dies
Æthelred, Æthelberht's brother, succeeds to Wessex

c.865-75. Burgred of Mercia's "Lunette" coinage, also adopted by Wessex

865/6. Viking "Great Heathen Army" lands in East Anglia, and spends winter there
East Anglians "make peace" with the army