The Edict of Boulogne, also called the Edict of Pacification of Boulogne and the Peace of La Rochelle, was signed in June 1573 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. 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).