Although the family's birthright was based in Galicia, the Marquises de los Vélez are considered to be heads of the Fajardo since they are Grandees of Spain.

[4] There is little historical significance to this marquessate, since it was one of many titles[5] inherited by the primogeniture of the House of Fajardo, whose leaders were Marquises of Vélez.

This was a branch of the powerful Catalan House of Montcada lineage, based in Sicily since the reign of Ferdinand I of Aragon.

Over time, they became one of the most important families in the Kingdom and accumulated numerous possessions, such as the rich villas of Biancavilla, Melilli, Caltabellotta, Bivona and Adrano.

Their influence earned them the rank of grandees of Spain and peers of the Kingdom of Sicily, along with leading government and military positions.