Lieres was first documented in history in 1385 in the Book Becerro of the Cathedral of San Salvador in Oviedo.

Early on, the residents of Siero participated in the conflict brought on by the Spanish War of Independence.

In the days beginning on March 19, 1809, Marshal Michel Ney and his army seized La Pola.

The French army plundered the area, causing serious damage, several deaths, and desolation among the people.

This instigated guerrilla resistance groups, the most notable being "The Nietu" of La Pola, the "Fombellida" in Valdesoto, and the "Jerome" (or "The Xastre").

In May 1812, during the Battle of Salamanca, General Bonet, deputy commander under Marshal Auguste de Marmont, suffered significant casualties with the systematic aggression of the guerrillas of Asturias, which lead Bonet to abandon the region and continue the fight on other fronts.

The British "Society of St. Louis" moved to Lieres after its economic collapse in the Carbayín parish.