The Edict of Boulogne, also called the Edict of Pacification of Boulogne and the Peace of La Rochelle, was signed in June 1573 [1] by Charles IX of France in the Château de Madrid in the Bois de Boulogne. It was officially registered by the Parlement of Paris on 11 August 1573.[2] The treaty officially ended the fourth phase of the French Wars of Religion (set off by the St. Bartholomew's Day massacre in August 1572; this phase of the wars included the siege of La Rochelle (1572-1573) and the Siege of Sancerre).