Putting together the different dates in the Chronicle for birth, death and length of reign, it appears that Æthelberht's reign was thought to have been either 560–616 or 565–618 but that the surviving sources have confused the two traditions.
Pondo xuntas as datas diferentes da Crónica para o nacemento, morte, e duración do reinado, parece que se cría que o reinado de Aethelberht trascorreu entre 560 e 616, ou entre 565 e 618, pero que as fontes confundiron as dúas tradicións.