The land of Lorges, located in Lorges (Loir-et-Cher) in the Canton of La Beauce, was, under the Ancien régime, a seigneury then a county and a duchy, having belonged to the Montgomery family then to the House of Durfort.

Their youngest son, Jacques, was given the right to continue the line of the new Lords of Lorges.

[1] The barony of Quintin, in Brittany, was erected into a simple duchy by letters of creatio nof 1691, registered on 31 March and 12 October of the same year.

[2] The succession of Guy Louis de Durfort de Lorges gave rise to a trial which ended with a decree of the King dated 29 September 1778.

Quintin, which ceased to be a duchy to become a barony again, remained with the Choiseul-Praslin, while the land of Lorges, located in Orléanais, and created into the Duchy of Lorges, was entrusted to the descendants of Adélaïde Philippine and Jean-Laurent.