Duke of Chaulnes

The duchy of Chaulnes was established by letters patent in January 1621 and registered on 6 March 1621 at the Parlement of Paris for the benefit of Honoré d'Albert (1581–1649), Marshal of France in 1619, known as the Marshal de Cadenet, a younger brother of Charles d'Albert, Duke of Luynes (1578–1621).

She was heir to a family holding the titles of Count of Chaulnes (created in December 1563), Vidame d'Amiens and Baron de Picquigny.

The Duke of Chevreuse's marriage contract stipulated that the title would pass to the youngest child of his marriage,[a] and, in case the male line subsequently ended, to the youngest of that name who held the arms of the d'Albert family.

In 1694, he passed the duchy of Luynes to his eldest son Honoré Charles on the occasion of his marriage to Marie Anne Jeanne de Courcillon (a daughter of Philippe de Courcillon), and assigned the duchy of Chaulnes to his younger son Louis Auguste, Vidame d'Amiens, also on the occasion of his marriage in 1710.

This transmission was confirmed by letters patent in October 1711, registered on 1 December 1711, which established Chaulnes as a duchy for the first time in favour of Louis Auguste's son, Charles François.