Alfred's Castle farmhouse was built within the abandoned prehistoric enclosure. King Alfred won a great victory against the Danes at the Battle of Ashdown, in AD 871. Being located just to the west of Ashdown House, Victorian antiquaries associated Alfred's Castle with the King's troop movements before the battle. The exact site of Alfred's battle has not yet been determined, however, so is a matter for debate. The most likely sites are near Compton and Aldworth in Berkshire. Excavations were carried out at Alfred's Castle from 1998-2000 by archaeologists from Oxford University, and post-excavation analysis is still ongoing (as of August 2011).
Alfred the Great Hoards dating to the Viking occupation of London in 871/2 have been excavated at Croydon, Gravesend, and Waterloo Bridge. These finds hint at the cost involved in making peace with the Vikings. For the next five years the Danes occupied other parts of England. In 876 under their new leader, Guthrum, the Danes slipped past the Saxon army and attacked and occupied Wareham in Dorset. Alfred blockaded them but was unable to take Wareham by assault. Accordingly, he negotiated a peace which involved an exchange of hostages and oaths, which the Danes swore on a "holy ring" associated with the