The Treaty of Loudun was signed on 3 May 1616 in Loudun, France, and ended the war that originally began as a power struggle between queen mother Marie de Medici's favorite Concino Concini (recently made Marquis d'Ancre) and Henry II de Condé, the next in line for Louis XIII's throne.
[2] Père Joseph, a confidant of Armand-Jean du Plessis (at the time Bishop of Luçon and Queen Anne's grand almoner, later to become Cardinal Richelieu and first minister), also took part.
[1] Concini was removed as lieutenant-general of Picardy and governor of Amiens, while Condé received one and a half million livres.
[2] Concini remained with quite a bit of power as the favorite of Marie, who eventually made Condé also give his support.
The war ended with Louis XIII's coup d'état of 24 April 1617, when Concini was arrested, but reportedly resisted and was killed.