Reading, Berkshire from the "Readingas", an Anglo-Saxon tribe whose name means "Reada's People" in Old English, or less probably the Celtic "Rhydd-Inge", meaning "Ford over the River". In late 870, an army of Danes invaded the kingdom of Wessex and set up camp at Reading. On 4 January 871, in the first Battle of Reading, King Ethelred and his brother Alfred the Great attempted unsuccessfully to breach the Danes' defences. The battle is described in the "Anglo-Saxon Chronicle", and that account provides the earliest known written record of the existence of Reading. The Danes remained in Reading until late in 871, when
Alfred the Great 22 January. They were defeated again on 22 March at the Battle of Merton (perhaps Marden in Wiltshire or Martin in Dorset). Æthelred died shortly afterwards on 23 April. In April 871 King Æthelred died and Alfred succeeded to the throne of Wessex and the burden of its defence, even though Æthelred left two under-age sons, Æthelhelm and Æthelwold. This was in accordance with the agreement that Æthelred and Alfred had made earlier that year in an assembly at "Swinbeorg". The brothers had agreed that whichever of them outlived the other would inherit the personal property that King Æthelwulf had