 Bede 's account of the early migrations of the Angles and Saxons to England omits any mention of a movement of those peoples across the channel from Britain to Brittany described by Procopius , who was writing in the sixth century . Frank Stenton describes this omission as " a scholar 's dislike of the indefinite " ; traditional material that could not be dated or used for Bede 's didactic purposes had no interest for him . 
