Magna Carta the King in the charters. In addition, medieval cases referred to the clauses in Magna Carta which dealt with specific issues such as wardship and dower, debt collection, and keeping rivers free for navigation. Even in the 13th century, some clauses of Magna Carta rarely appeared in legal cases, either because the issues concerned were no longer relevant, or because Magna Carta had been superseded by more relevant legislation. By 1350 half the clauses of Magna Carta were no longer actively used. During the reign of King Edward III six measures, later known as the "Six Statutes", were passed between
Magna Carta demands for reform, the 'Articles of the Barons'. Stephen Langton's pragmatic efforts at mediation over the next ten days turned these incomplete demands into a charter capturing the proposed peace agreement; a few years later, this agreement was renamed Magna Carta, meaning "Great Charter". By 15 June, general agreement had been made on a text, and on 19 June, the rebels renewed their oaths of loyalty to John and copies of the charter were formally issued. Although, as the historian David Carpenter has noted, the charter "wasted no time on political theory", it went beyond simply addressing individual baronial complaints,