Once accepted into Spanish society, the brothers were so grateful that they devoted themselves to a stronger religious and spiritual commitment among themselves, and became very patriotic.
Through time, the name Carrillo has been subject to several false etymologies and irrelevant definitions, but the legendary story has roots in anecdotal evidence and tradition.
The surname "Carrillo" is first found in Castile, Spain, in Burgos, Palencia, Soria, Logroño, Navarre, and Andalucia.
Family members later went off to help in the conquest and establishment of colonies outside Spain, and included Cuba, Puerto Rico, Mexico, Venezuela, Costa Rica, Colombia, Chile, Philippines, Argentina, and the United States of America, particularly California.
The House of Carrillo frequently served the government through holding many offices and providing military leaders for Spain.
Effective throughout the Middle Ages, until the remodeling of the Chancilleries carried out by the Catholic Monarchs; from 1572 it became a merely honorary position.