The
Treaty of Wallingford, also known as the
Treaty of Winchester or the
Treaty of Westminster, was an agreement reached in
England the summer of 1153. It effectively ended a civil war known as
the Anarchy (1135–54), caused by a dispute between
Empress Matilda and her cousin King
Stephen of England over the English crown. The Treaty of Wallingford allowed Stephen to keep the throne until his death (which was to come in October 1154), but forced Stephen to recognise Matilda's son Henry of Anjou (also called Henry FitzEmpress), who later became
Henry II, as his heir.