Battles - Lewes 1264, Evesham 1265 CE

Henry III, Simon de Montfort (6th Earl of Leicester) - Second Barons' War

Lewes: Provision of Oxford, Edward Longshanks, Henry III captured, Mise of Lewes
Evesham: De Montfort's Parliament, Earl Gilbert de Clare, Simon the Younger, Llewelyn ap Gruffudd, de Montfort killed, Dictum of Kenilworth

The Battle of Lewes was one of two main battles of the conflict known as the Second Barons' War. It took place at Lewes in Sussex, on 14 May 1264. It marked the high point of the career of Simon de Montfort, 6th Earl of Leicester, and made him the "uncrowned King of England". Henry III left the safety of Lewes Castle and St. Pancras Priory to engage the Barons in battle and was initially successful, his son Prince Edward routing part of the baronial army with a cavalry charge. However Edward pursued his quarry off the battlefield and left Henry's men exposed. Henry was forced to launch an infantry attack up Offham Hill where he was defeated by the barons' men defending the hilltop. The royalists fled back to the castle and priory and the King was forced to sign the Mise of Lewes, ceding many of his powers to Montfort.

The Battle of Evesham (4 August 1265) was one of the two main battles of 13th century England's Second Barons' War. With the Battle of Lewes, de Montfort had won control of royal government, but after the defection of several close allies and the escape from captivity of Prince Edward, he found himself on the defensive. Forced to engage the royalists at Evesham, he faced an army twice the size of his own. The battle took place on 4 August 1265, near the town of EveshamWorcestershire.

The battle soon turned into a massacre; Simon de Montfort, Earl of Leicester, was killed and his body mutilated. This marked the defeat of  and the rebellious barons by the future King Edward I, who led the forces of his father, King Henry III. Though the battle effectively restored royal authority, scattered resistance remained until the Dictum of Kenilworth was signed in 1267.