Bede died (25-5-735)

Saint Bede (OE Bæda) -- born about 672.
Monk at Jarrow (present South Tyneside).
Wrote more than 60 works on diverse subjects, but probably best known for _Historia Ecclesiastica Gentis Anglorum_ (Ecclesiastical History of the English People).
It includes a snapshot linguistic picture of Great Britain in his time:
"This island at present...contains five nations, the English, Britons, Scots, Picts and Latins, each in its own peculiar dialect cultivating the sublime study of Divine truth. The Latin tongue is, by the study of the Scriptures, become common to all the rest."
He's also the source of the tradition about the Angles, Saxons and Jutes, and where they settled, though his account is difficult to interpret in detail.