The Anarchy: King Stephen besieges the last opposition stronghold, at Wallingford.[1]
The Anarchy: Roger de Berkeley is dispossessed of Berkeley Castle in Gloucestershire for withholding his allegiance from the Plantagenets and the Lordship of Berkeley is granted to Robert Fitzharding, founder of the Berkeley family which will still hold the castle in the 21st century.
1153
January – The Anarchy: Henry, Count of Anjou, arrives in England in a campaign against King Stephen in favour of his mother Empress Matilda.[3]