This is the arrangement known as the peace of Wedmore (878), though no document embodying its provisions is in existence.
The measures taken by Alfred to repress this revolt culminated in the capture of London in 885 or 886, and the treaty known as Alfred and Guthrum's peace, whereby the boundaries of the treaty of Wedmore (with which this is often confused) were materially modified in Alfred's favour.
911 or 912.1 For a few years previous to that date our chief authority for the history of the piracies and raids in the Frankish empire fails us: 2 we know that the Norsemen had a few years before that date been driven in great numbers out of Ireland; and England had been in a sense pacified through the concession of a great part of the island to the invaders by the peace of Wedmore, A.D.
Much was retrieved by the victory of Aethandune; yet even after the peace of Wedmore as large a part of the land lay under the power of the Danes as of the English.
A large portion of the Great Army refused to be bound by the peace of Wedmore, made some further attempts on England which were frustrated by Alfred's powerful new-built fleet, and then sailed to the continent and spread devastation far and wide.