Clause sixty-one of this document, known as the "Security Clause," created the Great Council.
Clause sixty-one of this document, known as the "Security Clause," created the Great Council. This document was issued after a defeat at the Battle of Bouvines, and Pope Innocent III declared it null and void. An attempt to defy it led to the First Baron's War. This document introduced the concept of Habeas Corpus and was signed at Runnymede by a Plantagenet king on the insistence of his nobles. For 10 points, name this document signed by King John of England that granted rights and limited royal power in England. 
Clause sixty-one of this document, known as the "Security Clause," created the Great Council.
{Magna Carta} Libertatum [prompt on {Great Charter} of {Freedoms}]