[1] His brother Honoré d'Albert, 1st Duke of Chaulnes, was governor of Picardy and Marshal of France (1619), and defended his province successfully in 1625 and 1635.

It was Luynes who, with Vitry, captain of the guard, arranged the plot that ended in Concini's assassination in 1617, and secured all the latter's possessions in Italy and France.

On 14 November 1619, he was officially received as a duke and a Peer of France at a ceremony in the great hall of the Parlement of Paris.

[5] Luynes received the post in part by default: the obvious choice, the Duke of Lesdiguières, was a Protestant and refused to abjure.

[6] Luynes was involved in the failure of the Siege of Montauban (17 August – 2 November), for which he received much criticism, although he had not been the field commander.

After her death on 12 August 1679, Louis-Charles, Marie's son from her marriage to the Duke of Luynes inherited the duchy of Chevreuse, and his descendants have held it since.