Anglo-Saxon Chronicle 

   The Anglo-Saxon Chronicle is not a detailed year-by-year record of events with no political axe to grind. It's a quasi-official history, splicing together information from different regions of settlement centered around powerful kings and promotes an east-to-west model for the settlement of England south of the Thames. Having dealt with Kent, the entries turn to Sussex with the arrival of Ælle in 477. Sussex is ignored after the arrival of Cerdic and Cynric in 495. The Anglian people of the Midlands are completely ignored with Anglo-Norman historians placing their arrival circa 525; and that it's only with the entry on Ida in 547, taken from Bede, that we leave the West Saxons again. A number of historians have suggested that the eighth and ninth century compilers who first began to set down detailed accounts of the settlement of the Anglo-Saxons were mistaking the origin stories of the early kings for the arrival of the first settlers. Thus, Ida was the first Anglian ruler to take total control of Bernicia, although his ancestors may have been living there for a century or more. The same goes for all the other origin stories with the exception of the arrival of Hengist, whom most sources regard as the leader of the first settlers.