|Dukedom of Saint-Simon|
|Created by||Louis XIII|
|Peerage||Peerage of France|
Peerage of Spain
|First holder||Claude de Rouvroy|
|Last holder||Louis de Rouvroy|
Duke of Saint-Simon (French: duc de Saint-Simon; Spanish: duque de Saint-Simon) was a title in the Peerage of France and later in the Peerage of Spain. It was granted in 1635 to Claude de Rouvroy, comte de Rasse. The title's name refers to the seigneury that was held by the Rouvroy family at Saint-Simon in Aisne.
The second duke's two sons both predeceased him, making the French dukedom extinct in 1755. However, the second duke’s title had been introduced into the Spanish peerage and granted Grandee status when he was ambassador there. This meant that the Spanish Dukedom of Saint-Simon could be inherited through the female line, and descendants continued to use this title until the 19th century.
Dukes of Saint-Simon (1635)
|From||To||Duke of Saint-Simon|
|1635||1693||Claude de Rouvroy, duc de Saint-Simon (1607–1693)|
|1693||1755||Louis de Rouvroy, duc de Saint-Simon (1675–1755)|
- Jean Baptiste Courcelles (1827), Histoire généalogique et héraldique des pairs de France (in French), p. 222.
- Société héraldique et généalogique de France (1882), Bulletin (in French), p. 391.