What connection can be found between Simon de Montfort – Earl of Leicester, leader of the English Parliament

What connection can be found between Simon de Montfort – Earl of Leicester, leader of the English Parliament in 1265, and Simon de Montfort – the leader of the Crusaders in the war against the Albigensians?

Count Simon IV de Montfort – the leader of the Crusaders in the campaign against the Albigensians – had land holdings in France and England, since his ancestor fought at Hastings. In 1204, Philip II conquered Normandy from England and demanded that each landowner take one citizenship. Then Simon IV de Montfort bequeathed his English possessions to his youngest son (the future Simon V de Montfort, Earl of Leicester), and the French possessions (including the lands seized in Languedoc) to the eldest son of Amaury, who later ceded the southern lands to King Louis VIII.