Historical biography archive · Updated 2026-11-03

Simon de Montfort Biography and Timeline

Follow Simon de Montfort through 71 dated historical records for England.

Simon de Montfort, historical timeline

A chronological timeline drawn from matching World History Database records.

71Distinct records
1 of 2Page
1208–1265Years on this page

1208

Birth of 4th son

Earl · House / House of Montfort

4th son of Simon IV de Montfort, born in Normandy

Birth of Simon de Montfort

Earl · Normandy · House / House of Montfort

Birth of Simon de Montfort, 4th son of Simon IV de Montfort

Capture of Carcassonne

Earl · Carcassonne · Warfare / Holy Crusades, 4th

Captures Carcassonne from the Albigensian heretics

Role range: 1202-1204

1213

Battle of Muret

Earl · Muret · Warfare / Holy Crusades, 4th

Defeats & kills Peter II of Aragon

Role range: 1202-1204

Invasion of Iberia

Earl · Iberia · Warfare / Holy Crusades, 4th

Simon de Montfort leads the Crusaders into Iberia

Role range: 1202-1204

1229

Succession

Earl · Leicester · House / House of Montfort

Visits England to claim the earldom of Leicester for himself

1231

Peerage

Earl · Leicester · House / House of Montfort

Created Earl of Leicster, the 1st Earl of England

1236

Coronation

Earl · Westminster Abbey · House / House of Montfort

Officiates as High Steward at the coronation of Henry IIIs Queen, Eleanor of Provence

1238

Peerage

Earl · House / House of Montfort

Created Earl of Leicester, 6th

Marriage

Earl · London · House / House of Montfort

Marries Eleanor, Henry IIIs sister

1239

Exile of Simon de Montfort

Earl · London · House / House of Montfort

Flees with Eleanor after Henry III accuses him of seducing her before the wedding

Baptism

Earl · London · House / House of Montfort

Becomes one of the future Edward Is godfathers

Investiture

Earl · London · House / House of Montfort

Invested as the Earl of Leicester

1242

Invasion of Gascony

Earl · London · House / House of Montfort

Reconciled with Henry III in his campaign to capture lost territories in France

1248

Vice Regent of Gascony

Earl · London · House / House of Montfort

Appointed Vice Regent of Gascony by Henry III, is given absolute power over revenue

Rebellion of drives Gascony into

Earl · Gascony · House / House of Montfort

de Montforts strict rule drives Gascony into rebellion

Rebellion of drives Gascony into

Earl · Gascony · Warfare / Military

de Montforts strict rule drives Gascony into rebellion

1252

Trial

Earl · Gascony · House / House of Montfort

Cleared of charges by Henry III of Gascon of misrule, retires to France

1254

Constitution of England

Earl · Government / Government of England

2 knights are summoned to represent each shire to discuss taxation. 1st example of elected representatives meeting to discuss taxation

Council of Oxford

Earl · Oxford · House / House of Montfort

The Council of Oxford appoints a committee of 24 who produce the Provisions of Oxford

Provisions of Oxford

Earl · Oxford · House / House of Montfort

The Council of Oxford appoints a committee of 24 who produce the Provisions of Oxford

Rebellion of Simon de Montfort

Earl · London · Warfare / Military

Leads Parliament in turning down Henry IIIs request for a subsidy

1258

Rebellion of Rebels in London

Earl · London · Warfare / Military

Demands Henry III reform his administration. Demands Henry III free himself from the Popes Sicilian campaign

Alliance Simon de Montfort and the Barons

Earl · House / House of Montfort

Edward I is installed as Governor & de Montfort becomes leader of the barons

Rebellion of Rebels in Gascony

Earl · Gascony · House / House of Montfort

Helps Henry III suppres a rebellion in Gascony

Rebellion of Rebels in Gascony

Earl · Gascony · Warfare / Military

Helps Henry III suppres a rebellion in Gascony

Rule of Gascony

Earl · Gascony · Warfare / Military

Helps Henry III suppres a rebellion in Gascony

1263

Provisions of Oxford

Earl · Warfare / Barons War, 2nd

Henry refuses to observe the provisions of Oxford

Role range: 1263-1267

Siege of London

Earl · London · Warfare / Barons War, 2nd

Montforts Party take arms & subdue south England

Role range: 1263-1267

Provisions of Oxford

Earl · London · Warfare / Barons War, 2nd

Henry accepts de Montforts terms

Role range: 1263-1267

Siege of London

Earl · London · Warfare / Barons War, 2nd

Montfort occupies London

Role range: 1263-1267

Mobilization

Earl · London · Warfare / Barons War, 2nd

Comes out of retirement in France to become the leader of the 2nd Barons revolt

Role range: 1263-1267

1264

Mise of Amiens

Earl · Amiens · Warfare / Barons War, 2nd

The Mise of Amiens provokes de Montfort into leading another Barons War. Louis IX finds in favor of Henry III & exempts him from the Provisions of Oxford

Role range: 1263-1267

Battle of Lewes

Earl · Fletching · Warfare / Barons War, 2nd

The Royalists in Lewes refuse to listen to mediation. Arrives at Fletching from London 9 miles north of Lewes

Role range: 1263-1267

Battle of Lewes

Earl · Lewes · Warfare / Barons War, 2nd

Shares command with his father Simon de Montfort. Gathers his troops & marches to the summit of the South Downs overlooking Lewes. Captures & imprisons Henry III & Richard of Cornwall, then dictates peace terms

Role range: 1263-1267

Mise of Amiens

Earl · Amiens · Warfare / Barons War, 2nd

Montfort becomes de facto ruler of England. Establishes Government by council divesting Henry III of real power

Role range: 1263-1267

Peace

Earl · Canterbury · Warfare / Barons War, 2nd

Government reform is confirmed

Role range: 1263-1267

Rebellion of to head the

Earl · London · Warfare / Barons War, 2nd

Sends his elder sons Simon & Henry to head the revolt in the midlands & west. Organises resistance in the south

Role range: 1263-1267

Siege of Rochester

Earl · Rochester · Warfare / Barons War, 2nd

Fails to capture Rochester castle & withdraws to London. Captures Rochester to open up a route to the Cinque Ports

Role range: 1263-1267

1265

Constitution of England

Earl · Government / Government of England

Convenes the opening of Parliament which includes commoners for the 1st time

Records, sources and methodology

These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.