06 Apr 1264 Battle of Northampton (Northampton Castle)

On 06 Apr 1264 the future Edward "Longshanks" I King England (24) and Roger Leybourne fought for the King at Northampton Castle during the Battle of Northampton. Simon Montfort 6th Earl Leicester fought for the rebels with his son Simon "Younger" Montfort who was captured.

14 May 1264 Battle of Lewes

On 14 May 1264 the army of Simon Montfort 6th Earl Leicester including Gilbert "Red Earl" Clare 7th Earl Gloucester, Earl Hertford (20) , Henry Hastings (29) and Nicholas Segrave 1st Baron Segrave (26) defeated the army of Henry III King England (56) during the Battle of Lewes at Lewes. Henry III King England (56) , his son the future Edward "Longshanks" I King England (24) , Humphrey Bohun 2nd Earl Hereford, 1st Earl Essex (60) , Richard Cornwall 1st Earl Cornwall (55) , John "Red Comyn" Comyn 1st Lord Baddenoch and John Giffard 1st Baron Giffard Brimpsfield were captured. John Warenne 6th Earl Surrey (33) , John Balliol (56) , Robert Bruce 5th Lord Annadale (49) , Roger Leybourne and William Valence 1st Earl Pembroke fought for the King. Guy Lusignan was killed. Fulk IV Fitzwarin drowned. Walter Cantilupe Bishop Worcester was present and blessed the Montfort army before the battle.

28 May 1265 Prince Edward's Escape from Kenilworth Castle

On 28 May 1265 Edward "Longshanks" I King England (25) , with the help of Roger Leybourne escaped from Kenilworth Castle [Prince Edward's Escape from Kenilworth Castle].

04 Aug 1265 Battle of Evesham

On 03 Aug 1265 Walter Cantilupe Bishop Worcester had dinner with Simon Montfort 6th Earl Leicester. [Battle of Evesham]

On 04 Aug 1265 the army loyal to Henry III King England (57) , led by his son the future Edward "Longshanks" I King England (26) , supported by Gilbert "Red Earl" Clare 7th Earl Gloucester, Earl Hertford (21) , Warin Basingburne and John Giffard 1st Baron Giffard Brimpsfield defeated the rebel army of Simon Montfort 6th Earl Leicester. Roger Leybourne fought and reputedly saved the King's life. Adam Mohaut rescued the King. The rebels Simon Montfort 6th Earl Leicester and his son Henry Montfort were killed. Hugh Despencer 1st Baron Despencer (41) was killed by Roger Mortimer 1st Baron Mortimer Wigmore (34) . The rebels Simon Beauchamp (31) , Ralph Basset 1st Baron Basset Drayton (23) , William Devereux (46) , Hugh Troyes, Richard Trussel, Peter Montfort, William Mandeville, William Crepping, William Birmingham, Guy Balliol and Thomas Astley were killed. Henry Hastings (30) , Humphrey Bohun (40) , Nicholas Segrave 1st Baron Segrave (27) , John Vesci, John Fitzjohn and Guy Montfort Count Nola were captured. [Battle of Evesham]

15 May 1266 Battle of Chesterfield

On 15 May 1266 Henry "Almain" Cornwall (30) and John Warenne 6th Earl Surrey (35) fought for the King at Chesterfield during the Battle of Chesterfield. Henry Hastings (31) , John Clinton, Roger Mandeville, John Eyvil, Baldwin Wake all fought on the rebel side. The rebel Robert Ferrers 6th Earl Derby (27) was captured.

31 Oct 1266 Dictum of Kenilworth

On 31 Oct 1266 the Dictum of Kenilworth was issued. The Dictum was a peace agreement between Henry III King England (59) and the rebels who were besieged in the impregnable Kenilworth Castle. Those appointed to the committee by Parliament included: Bishops Walter Branscombe Bishop Exeter, Walter Giffard Archbishop York, Nicholas Unknown Bishop Worcester, Bishop Winchester and Richard Carew Bishop Bath and Wells, Earls Gilbert Clare 8th Earl Gloucester, Earl Hertford and Humphrey Bohun 2nd Earl Hereford, 1st Earl Essex (62) and Barons Philip Basset, John Balliol (58) , Robert Walerand, Alan Zouche (63) , Roger Somery 2nd Baron Dudley (76) and Warin Bassingbourne. The committee were given until All Saints Day, 01 Nov 1266, to draft and agreement. The primary purpose of the Dictum was to restore Royal authority repudiating the Provisions of Oxford, confirming the Magna Carta and Charter of the Forest. Rebels were fined five times their annual income. Rebel commanders Robert Ferrers 6th Earl Derby (27) and Henry Hastings (31) were fined seven times their annual income. The Dictum, however, required the rebels to pay their fines before being restored to their lands; something of a Catch-22 since if they weren't restored to their lands they would have no income to pay the fine.

12 Dec 1266 Surrender of Kenilworth (Kenilworth Castle)

On 12 Sep 1266 the garrison at Kenilworth Castle surrendered. [Surrender of Kenilworth]

Nov 1267 Statute of Marlborough

Before 16 Nov 1267 the Statute of Marlborough revised the Dictum of Kenilworth insofar as those fined were restored to their lands before paying their fines.