913. Raiding parties from Northampton and Leicester
Æthelflæd builds fortresses at Tamworth and Stafford
The main Anglo-Saxon Chronicle, recording Edward's campaign, notes no fortress-building this year, but only the activities of armies from Northampton and Leicester which raided around Hook Norton and Luton. The people of the district defeated the raiding band and put them to flight and recaptured their booty.
Æthelflæd, meanwhile, built the fortress at Tamworth in the early summer, and another before August at Stafford. These fortresses would shore up the northeastern boundaries of English Mercia against the Danish armies in the Five Boroughs.