Henry III was a 13th century English king who came to the throne at an early age. His reign was marked by strife with barons, led by Simon de Montfort. By 1258, the situation had worsened, and Henry was forced to agree to the Provisions of Oxford. This was a document out-lining reforms to English Common Law. The reforms reinforced and refined many of the principles laid down in the Magna Carta, paving the way for greater rights and freedoms for the common man.