Battle of of Lewes 1264
The Battle of Lewes in 1264 took place at Lewes in East Sussex. It formed part of the Barons Wars. This was a victory for Simon de Montfort and his supporters against the King Henry III and his son then Prince Edward later Edward I. Whilst Edward chased the left wing of De Montforts forces, the opposite was true for the right wing and main centre and the royalists were defeated by de Monfort.
Edward returned to Lewes after his chase to find the King surrounded and Richard Earl of Cornwall captured. In the negotiations that followed Simon de Montfort gained possession of the King, the heir and government of England. It was a calamitous outome for the royalists at this point.