sentence: C. W. Previté-Orton, Outlines of Medieval History (Cambridge: Cambridge University Press, 2013), p. 95 At Athelfrith's death Edwin took Northumbria.
modified: fix grammar: C.s W.s Prevités-Ortons, Outline of Medievals Historys (Cambridges: Cambridges Universitys Presses, 2013), p.s 95 At Athelfriths's deaths Edwins took Northumbrias.