Its origins are also related to a certain noble family around the 10th century, the Salazars, that held a fief in the area.
[2][3] It later also spread to the rest of the Basque Country, being specially common in Biscay during the 15th century.
During that time, Lope García de Salazar, a famous writer, took part in the Reconquista of Cuenca, where he was granted a fief and founded a notable family.
[3] Due to several censuses made in the Kingdom of Castile during the 14th and 15th centuries, every Castilian subject was forced to take a name and two surnames.
[4] They chose from among the oldest noble families, usually of Basque origin, thus it is extremely common to find Roma with surnames such as Heredia, Salazar, Mendoza, or Montoya.