Note 818 — Chapter VII · THE TOWNS.
Reading edition
Asser considers London to belong locally to Essex: he states that the Danes plundered it in 851. Vit. Ælfr. in anno. Berhtwulf of Mercia made an unsuccessful attempt to relieve it; so that it must be considered to have been a Mercian town at that period. Later it seems to have been left to itself, till Ælfred restored it in 886.