A charter that failed in ten weeks

King John put his seal to Magna Carta in a meadow by the Thames, and the Pope annulled it before the summer was out.

It was a peace treaty between a king and his barons and it did not keep the peace; war restarted almost at once. What survived was clause 39, on nobody being imprisoned except by lawful judgement, which was reissued by later kings until it stopped being a truce and became a principle.