Charles II of Spain (Carlos II) (November 6, 1661, Madrid - November 1, 1700, Madrid) was King of Spain, ruling over nearly all of Italy (except Piedmont, the Papal States and Venice), the Spanish territories in the Southern Low Countries, and Spain's overseas Empire, stretching from Mexico to the Philippines. Charles was the only surviving son of his Habsburg predecessor, King Philip IV of Spain and his second Queen (and niece), Mariana of Austria, another Habsburg. His birth was greeted with joy by the Spaniards, who feared the disputed succession which could have ensued if Philip IV had left no male heir.

Charles II is known in Spanish history as El Hechizado ("The Bewitched") from the popular belief — to which Charles himself subscribed — that his physical and mental disabilities were caused by "sorcery" rather than the much more likely cause: centuries of inbreeding within the Habsburg dynasty (in which first cousin and uncle/niece matches were commonly used to preserve a prosperous family's hold on its multifarious territories). Charles' own immediate pedigree was exceptionally populated with nieces giving birth to children of their uncles: Charles' mother was niece of Charles' father, being daughter of Maria Ana of Spain (1606-46) and Emperor Ferdinand III. Thus, Empress Maria Anna was simultaneously his aunt and grandmother. Still, the king was exorcised, and the exorcists of the kingdom were called upon to put straight questions to the devils they cast out. His great-great-great grandmother, Joanna I (Joanna the Mad), mother of the Spanish King Charles I who was also Holy Roman Emperor Charles V — became completely insane early in life; the fear of a taint of insanity ran through the Habsburgs. Charles descended from Joanna a total of 14 times — twice as a great-great-great grandson, and 12 times further.

Charles II was the last of the Spanish Habsburg dynasty, physically disabled, mentally retarded and disfigured (possibly through affliction with mandibular prognathism — he was unable to chew). His tongue was so large that his speech could barely be understood, and he frequently drooled. He may also have suffered from the bone disease acromegaly. He was treated as virtually an infant in arms until he was ten years old. Fearing the frail child would be overtaxed, he was left entirely uneducated, and his indolence was indulged to such an extent that he was not even expected to be clean. When his half-brother John of Austria the Younger, a natural son of Philip IV, obtained power by exiling the queen mother from court, he insisted that at least the king's hair should be combed.

The only vigorous activity shown by Charles was shooting, which he occasionally indulged in the preserves of the Escorial.

Charles II
King of Spain, Ruler of the Spanish Netherlands

When Charles II died in 1700, the line of the Spanish Habsburgs died with him. He had named a great-nephew, Philippe de Bourbon, Duke of Anjou (a grandson of the reigning French king Louis XIV, and of Charles' half-sister, Maria Theresa of Spain - Louis himself was an heir to the Spanish throne through his mother, daughter of Philip III), as his successor. He had named his blood cousin Charles (from the Austrian branch of the Habsburg dynasty) as alternate successor.

The specter of the multi-continental empire of Spain passing under the effective control of Louis XIV provoked a massive coalition of powers to oppose the Duc d'Anjou's succession. The actions of Louis heightened the fears of the English, the Dutch and the Austrians, among others. In February of 1701, the French King caused the Parlement of Paris (a court) to register a decree that should Louis himself have no heir that the Duc d'Anjou--Phillip V of Spain--would surrender the Spanish throne for that of the French, ensuring dynastic continuity in Europe's greatest land power.

However, a second act of the French King "justified a hostile interpretation": pursuant to a treaty with Spain, Louis occupied several towns in the Spanish Netherlands (modern Belgium and Nord-Pas-de-Calais). This was the spark that ignited the powder keg created by the unresolved issues of the War of the League of Augsburg (1689-97) and the acceptance of the Spanish inheritance by Louis XIV for his grandson.

Almost immediately the War of the Spanish Succession (1702-1713) began. After eleven years of bloody, global warfare, fought on four continents and three oceans, the Duc d'Anjou, as Philip V, was confirmed as King of Spain on substantially the same terms that the powers of Europe had agreed to before the war. Thus the Treaties of Utrecht and Rastatt ended the war and "achieved little more than...diplomacy might have peacefully achieved in 1701." A proviso of the peace perpetually forbade the union of the Spanish and French thrones.