Events By place Europe Swithelm is succeeded by Sighere and Sebbi as king(s) of Essex. Batbayan succeeds Kubrat in Onoguria. Asia The city of Seongnam is renamed Hansanju. By topic Religion According to the Annales Cambriae, the Anglo-Saxons convert to Christianity after the Second Battle of Badon. Sighere of Essex encourages his subjects to reject Christianity and return to their indigenous religion Births Deaths April 16 – Fructuosus of Braga Brahmagupta, Indian mathematician and astron… (More on 665)