Juan Francisco de la Cerda Enríquez de Ribera, 8th Duke of Medinaceli, 7th Marquis de Cogolludo, 4th Marquis of Alcalá de la Alameda, 6th Duke of Alcalá de los Gazules, 9th Count of Los Molares, 9th Marquis of Tarifa, 8th Count of El Puerto de Santa María, was a Spanish noble and politician, and valido of King Charles II of Spain. Wikipedia