At the end of the 14th century, King John I of Castile granted the lordship of Liébana to his cousin Don Juan Téllez of Castile, Lord of Aguilar de Campoo and son of the Infante Don Tello of Castile.
A finais do século XIV, o Rei Xoán I de Castela outorgou o señorío de Liébana ao seu primo Don Juan Téllez de Castela, Señor de Aguilar de Campoo e fillo do Infante Don Tello de Castela.