1803 in SpainEvents from the year '''1803 in Spain'''Incumbents Monarch – Charles IV Prime Minister - Pedro CevallosEventsThe members of the Royal Botanical Expedition to New Spain finally returned to Spain at different times during 1803. This scientific expedition explored the flora and fauna of the territories of New Spain between 1787 and 1803.Births - Pedro de Alcántara Álvarez de Toledo, 13th Marquis of VillafrancaDeaths 1 February – María Isidra de Guzmán y de la Cerda, scholar - José Camarón Bonanat