The signing of the Treaty of Lambeth in 1217 ended a war named for these people. For 10 points each:
[10e] Name these people, who occupied the highest level of feudal land tenure in England. Simon de Montfort led these people in opposition to the rule of Henry III.
ANSWER: barons [accept First Barons’ War or Second Barons’ War]
[10m] These reforms of 1258 asserted barons’ rights to be represented in the government, and set up a fifteen-member Privy Council. When Henry III overthrew these reforms in 1261, the Second Barons’ War began.
ANSWER: Provisions of Oxford [accept physical answers pointing to the city, for the UK site]
[10h] In 1267, the English parliament passed this 29-chapter set of laws, reintroducing many of the Provisions of Oxford, and incorporating the Dictum of Kenilworth.
ANSWER: Statute of Marlborough