The uprising of Montfort forced this man to sign the Provisions of Oxford strengthening the Magna Carta.
Stephen de Segrave and Peter de Rivaux both served in the court of this ruler. Aided by Gilbert de Clare, this ruler's son crushed an insurrection at the Battle of Evesham. Prior to that battle, this ruler was captured at the Battle of Lewes. (*) Simon de Montfort led the Second Barons' War against this ruler and called the Oxford Parliament to protest this ruler. The uprising of Montfort forced this man to sign the Provisions of Oxford strengthening the Magna Carta. For 10 points, name this English king who ruled between King John and Edward Longshanks.
Stephen de Segrave and Peter de Rivaux both served in the court of this ruler.
{Henry III} of England