The House of Bourbon-Montpensier or Maison de Bourbon-Montpensier was a semi royal family. The name of Bourbon comes from a marriage between Marie de Valois, comtesse de Montpensier (1375–1434) who married Jean de Bourbon - the duc de Bourbon. The second name of Montpensier, comes from the title of the family.
The Bourbon-Montpensier family were the founders of the vast wealth that would later be enjoyed by the House of Orléans and their cousins the Bourbon-Penthièvres.
The main line was founded by a marriage between John I, Duke of Bourbon and Marie of Valois, Countess of Montpensier. The title was transferred down the line, mainly by females. The most famous examples of holders of the title of duc de Montpensier were:
This semi royal house was in existence for just over two centuries.
On the death of Anne, Duchess of Montpensier, many of her titles, lands and wealth went to the House of Orléans. Her cousin Philippe de France, duc d'Orléans was the founder of the modern House of Orléans and was her sole heir. As a result of this vast inheritance, the Orléans family became very wealthy. Their wealth only increased when the Bourbon-Penthièvre married into the family in 1769.
The title Duke of Montpensier has been used as a courtesy title by other members of the House of Orléans:
Before the title was given to the Orléans Family, the title was the main on used by the holder. By the time of the marriage of Marie de Bourbon, Duchess of Montpensier and a Prince du Sang, Gaston, Duke of Orléans, a whole collection of titles had been collected and used. These ones were: