Henry rejected the Provisions of Oxford and ruled as badly as before. The barons called upon Simon de Montfort to lead them in a war against the king. This was the Second Barons' War.
What caused the Second Barons' War?
There were four key reasons for the Second Barons' War:
❖Henry III ignored the Provisions of Oxford. He formally rejected it in 1261.
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He had lost two major wars in France.
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He had increased taxes in order to pay the pope.
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The barons believed he was too close to the French, as many of his advisers were French.
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Battle of Lewes, 1264: The king and his son, Prince Edward, were captured.
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Battle of Evesham, 1265: Prince Edward's army defeated Simon De Montfort and the barons.
Who won the Second Barons' War?
The Second Barons' War was eventually won by King Henry III. Evesham had proved a vital victory for Henry and, after de Montfort died, the barons struggled with many of them supporting the king.