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appeared in legal cases, either because the issues concerned were no longer relevant, or because Magna Carta had been superseded by more relevant legislation.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 King, but once redress had been made for any breaches, the King would continue to rule as before. In one sense this was not unprecedented; other kings had previously conceded the right of individual resistance to their subjects if the King did not uphold his obligations. Magna Carta was however novel in that it set up a formally recognised means of collectively coercing the King. The historian Wilfred Warren argues that it was almost inevitable that the clause would result in civil war, as it "was crude in its methods and disturbing in its implications". The barons were trying to