Diego, Prince of Asturias Spanish prince of the XVIth century, heir of the Spanish Monarchy (1578-1582) (1575–1582) Parents Anna of Austria, Queen of Spain Philip II of Spain Children Siblings Carlos, Prince of Asturias Infanta Maria of Spain Ferdinand, Prince of Asturias Catalina Micaela of Spain Infante Carlos Lorenzo of Spain Philip III of Spain Isabella Clara Eugenia of Spain Pedro de Osorio
