910

This year Frithestan took to the bishopric of Winchester; and Asser died soon after, who was Bishop of Sherborne. The same year King Edward sent an army both from Wessex and Mercia, which very much harassed the northern army by their attacks on men and property of every kind. They slew many of the Danes, and remained in the country five weeks. This year the Angles and the Danes fought at Tootenhall; and the Angles had the victory. This same year Ethelfleda built the fortress at Bramsbury.

(Ingram, p.77-78)

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Aethelflaed started her program of fortress building, and completed ten burhs in less than five years.

(Lacey, p.167)