Ciriaco del Llano was a Peninsular Spanish General who notably commanded royalist forces during the Mexican War of Independence.
In August 1811, he participated in his first campaign against the Mexican insurgents where he handily defeated them at the Battle of Llanos de Apan.
His forces were later routed at the Battle of Izúcar in February 1812 by Mexican rebels under the command of Mariano Matamoros.
In 1815, as chief general of the expeditionary corps at Cerro de Cóporo, Llano was forced to retreat after an unsuccessful attack.
He was besieged at Puebla by a rebel army under the command of Nicolás Bravo in July 1821 and was obliged again to surrender his forces together with Agustín Cosme Damián de Iturbide y Arámburu, the future emperor of Mexico who was at that time fighting for the Spanish Crown.