Gaston, Duke of Orléans
The title was later assumed by Gaston, Duke of Orléans, brother of Louis XIII, and then Philippe I, Duke of Orléans, brother of Louis XIV. From 1643 to 1660, while both princes were alive, Philippe was commonly known as "le Petit Monsieur", while Gaston, his uncle, was known as "le Grand Monsieur".