Magna Carta originated as an unsuccessful attempt to achieve peace between royalist and rebel factions in 1215, as part of the events leading to the outbreak of the First Barons' War. England was ruled by King John, the third of the Angevin kings. Although the kingdom had a robust administrative system, the nature of government under the Angevin monarchs was ill-defined and uncertain. John and his predecessors had ruled using the principle of , or "force and will", taking executive and sometimes arbitrary decisions, often justified on the basis that a king was above the law. Many contemporary writers believed that monarchs should rule in accordance with the custom and the law, with the counsel of the leading members of the realm, but there was no model for what should happen if a king refused to do so.