Simon de Montfort, 6th Earl of Leicester led to the first Parliament called to act as a check on the monarch in 1295 and was commonly known as Simon de Montford hence the unusually long continuation in the alternative spelling, see Montfort for examples.
The 6th Earl of Leicester, Simon de Montfort, initiated the first parliament designed to limit the monarch's authority in 1295. He is often referred to as Simon de Montfort due to the unusual spelling variations of his name, see Montfort for further examples.