The puppet King of Mercia, Ceowulf, died. Earldorman Aethelred, succeeded as King of Mercia.
King Alfred’s navy won a naval battle against four Viking ships. Two of the enemy ships were captured and the others destroyed.
A group of Vikings arrived in England and attacked Rochester in Kent. However, Rochester had been fortified by King Alfred and was able to withstand the attack until help came.
King Alfred took control of London (Lundenburgh)from the Vikings. However, as it was technically in the Kingdom of Mercia he placed the city under the protection of Aethelred of Mercia.
Alfred constructed a harbour to the west of London Bridge.
King Alfred married his eldest daughter, Aethelflaed, to King Aethelred of Mercia. As part of the marriage agreement, Aethelred acknowledged Alfred as his Lord. Aethelred became known as Lord of Mercia rather than king.
Alfred began to surround himself with learned men including Asser and John the Saxon. He was very interested in learning and education.
Alfred’s son-in-law, Aethelred, Lord of Mercia, was taken ill. Alfred’s daughter Aethelflaed, Lady of Mercia, ruled Mercia while her husband was incapacitated. She shared rule with her husband after his health improved.
Alfred founded Shaftesbury Abbey. He made his daughter, Aethelgifu, abbess.
The Lord and Lady of Mercia, began fortifying the town of Worcester as a defensive burgh. Other towns in Mercia would follow.