Charles IV (Carlos Antonio Pascual Francisco Javier Juan Nepomuceno José Januario Serafín Diego de Borbón y Sajonia; 11 November 1748 – 20 January 1819) was King of Spain and ruler of the Spanish Empire from 1788 to 1808.
The Spain inherited by Charles IV gave few indications of instability, but during his reign, Spain entered a series of disadvantageous alliances and his regime constantly sought cash to deal with the exigencies of war. He detested his son and heir Ferdinand, who led the unsuccessful El Escorial Conspiracy and later forced Charles's abdication after the Tumult of Aranjuez in March 1808, along with the ouster of his widely hated first minister Manuel de Godoy. Summoned to Bayonne by Napoleon Bonaparte, who forced Ferdinand VII to abdicate, Charles IV also abdicated, paving the way for Napoleon to place his older brother Joseph Bonaparte on the throne of Spain. The reign of Charles IV turned out to be a major turning point in Spanish history.
Charles was the second son of Charles III and his wife, Maria Amalia of Saxony. He was born in Naples (11 November 1748), while his father was King of Naples and Sicily. His elder brother, Don Felipe, was passed over for both thrones, due to his learning disabilities and epilepsy. In Naples and Sicily, Charles was referred to as the Prince of Taranto. He was called El Cazador (meaning "the Hunter"), due to his preference for sport and hunting, rather than dealing with affairs of the state. Charles is considered by historian Stanley G. Payne as "good-hearted but weak and simple-minded."
On 18 November 1791, King Carlos IV promulgated a royal decree declaring the foundation of the "Royal University of Guadalajara". in modern times University of Guadalajara.
In 1788, Charles III died and Charles IV succeeded to the throne and ruled for the next two decades. Even though he had a profound belief in the sanctity of the monarchy and kept up the appearance of an absolute, powerful king, Charles never took more than a passive part in his own government.