Historia ecclesiastica gentis Anglorum
The historical Anglo-Saxon invasion of Britain took place during the 5th to 6th centuries. As historical records only set in the later 7th century, after Christianisation, reliable information on the royal genealogies only extend to what was then in living memory, to the early 7th century. Bede ("Historia ecclesiastica gentis Anglorum"), writing in the early 8th century, has reliable information on the 7th century, but is silent on the 6th.