 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appeared in legal cases, either because the issues concerned were no longer relevant, or because Magna Carta had been superseded by more relevant legislation.By 1350 half the clauses of Magna Carta were no longer actively used.During the reign of King Edward III six measures, later known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 1331 and 1369.