 Torrelavega was founded at the end of the thirteenth century by Garci Lasso de la Vega I (the elder), Adelantado Mayor of the Kingdom of Castile in the name of King Alfonso XI of Castile.Its current name is due to the contraction of the original eponym of "Torre de la Vega".The Castle or Tower of the Vega's was built by Leonor Lasso de la Vega, daughter of Garci Lasso de la Vega II, the younger, and mother of the Íñigo López de Mendoza, marqués de Santillana in order to administer the tax and privilege due in the family's territory.