Simon de Montfort, 6th Earl of Leicester
Simon de Montfort, 6th Earl of Leicester, was a French-born nobleman who married into the English royal family and became the leader of the baronial opposition to King Henry III, playing a transformative role in English constitutional history. Though born in France and initially a royal favourite, he grew increasingly disillusioned with Henry's arbitrary rule and excessive reliance on foreign advisors. Following Henry III's rejection of the Provisions of Oxford (1258), which sought to constrain royal power, Simon led the baronial rebellion that culminated in the Battle of Lewes in May 1264, where he captured King Henry III himself. As de facto ruler of England, Simon summoned the Parliament of 1265 — notable as the first English parliament to include not only barons and bishops but also elected knights from the counties and burgesses from the towns. This inclusion of commoners marks a pivotal step toward representative government in England. His ascendancy lasted barely a year. Henry's son Edward (later Edward I) escaped captivity, rallied royalist forces, and met Simon's army at the Battle of Evesham on August 4, 1265. Heavily outnumbered and outmaneuvered, Simon's forces were destroyed and he was killed in the fighting. His body was mutilated by royalist soldiers, but he was immediately venerated as a martyr by many English people, and his Parliament of 1265 is celebrated as a founding moment in the history of democracy.
- Lived: 1208 CE – 1265 CE
- Nationality: english
- Roles: politician, military_leader
