Simon de Montfort, 6th Earl of Leicester
My latest article on the Magna Carta 2015 Canada website discusses the impact of Magna Carta on the development of parliament. A generation after King John affixed his seal to Magna Carta in 1215, his son, Henry III and son-in-law, Simon de Montfort fought over the Great Charter’s legacy. Like his father, Henry III was inclined to disregard Magna Carta when it conflicted his personal interests but Montfort sought to impose checks and balances on the King that would ensure the rights codified by the Charter. By drafting the Provisions of Oxford in 1258 and expanding parliamentary representation to include townspeople, Montfort became a father of representative government with a legacy that continues to the present day.