Spain in the 17th century all contributed to the decline of the Habsburg rule of Spain. The end of the 17th century also brought the end of Habsburg rule. The 18th century began with the War of the Spanish Succession, which concluded in the establishment of the Bourbon dynasty in Spain. In 1469, Ferdinand II of Aragon and Isabella I of Castile united the Crowns of Aragon and Castile into one, creating the early modern Spanish state. Although this ensured future Spanish rulers would rule over both Aragon and Castile, both regions had their own administration and legal systems. In addition, Aragon itself was divided
Bourbon-Penthièvre Bourbon-Penthièvre The House of Bourbon-Penthièvre was an illegitimate branch of the House of Bourbon, thus descending from the Capetian dynasty. It was founded by the duc de Penthièvre (1725–1793), the only child and heir of the comte de Toulouse, the youngest illegitimate son of Louis XIV of France and the marquise de Montespan, and his wife, Marie Victoire de Noailles, the daughter of Anne Jules de Noailles, duc de Noailles. The House of Bourbon-Penthièvre, sometimes called: House of Bourbon-Toulouse-Penthièvre, had been called the House of Bourbon-Toulouse during the lifetime of the duc de Penthièvre's father, the "comte de Toulouse". The