The origin of surname Aguilera is Spain.

The most common type of family name found in the region was the surname that derives from the name of the father.
During the Middle Ages the patronymic system adopted for surnames.
Aguilera's family originally lived near the nest of a group of eagles, this name derives from the Latin name L'Aquillare that denotava a hunter of eagles.

The local names describe a region or place where they lived the first members of the lineage.

Some variations of this surname are: Aguilar, Aguilera, Aguilera, Aguiar, Aquilar and others.

The derivation of the name Aguilera was born in the mountains of Trasmiera in Santander, where it spread to Soria, Salamanca, Murcia and Andalucia. In the year 1290 the King Don Sancho Aguilera granted the lordship of Don Gil de Aguilera is the root of the lineage of the provinces of Guadalajara and Cuenca.

This widespread throughout the American continent.