The 
Battle of Evesham took place on 
August 4, 
1265, and was the decisive battle in the 
Baron's War[?], where 
Simon de Montfort led a number of rebellious barons against the 
Royalist forces led by Prince Edward (later King 
Edward I of England). de Montfort was encumbered by a number of unreliable allies, particularly the 
Welsh, who deserted before the battle commenced. Confronted by a force four times the size of his own, on unfavourable ground, the outcome rapidly turned into a massacre.
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