EN
The mental state and health condition of Charles II have remained a significant question in historical scholarship since the 19th century. Throughout his life and reign, European rulers closely monitored updates on his well-being within the context of rivalry between the Bourbon and Habsburg dynasties. Previous attention primarily centered on Charles II‘s condition during his adulthood and accepted Gabriel Mauro Gamazo‘s opinion, portraying him as mentally frail and in poor health. This study seeks to reassess these conclusions, as did Christopher Storrs, focusing on Charles II‘s childhood. Additionally, it aims to uncover the earliest moments in which Emperor Leopold I contemplated contingency plans in the event of the Spanish King‘s death.