Duke of Chevreuse
…a possession of the House of Guise, becoming the title of the Cardinal's grandnephew, Charles de Guise (1578–1657). It was sold in 1655 to his wife, Marie de Rohan, who transferred it to the son of her first marriage, the Duc de Luynes. It has since been held by the ducs de Luynes. List of dukes of Chevreuse since…