Coat of Arms & Family Crest Details
J. B. Rietstap, Armorial Général, Gouda: G. B. van Goor Zonen, 1884–87
Blazon (the actual original written record)“De gu. à l'aigle de sa., tenant en son bec un écusson de gu. ch. de trois barres d'or.”
A record of documented arms, meaning and origin, researched for the Aguilar family of Spain.
J. B. Rietstap, Armorial Général, Gouda: G. B. van Goor Zonen, 1884–87
Blazon (the actual original written record)“De gu. à l'aigle de sa., tenant en son bec un écusson de gu. ch. de trois barres d'or.”

The Aguilar arms were recorded in Spain, c. 1722.
Arms such as these were typically recorded in Castile.
Castile was the heart of Spain and the source of most of its noble families. Land won in the long wars against the Moors was granted out to fighting men, and a man granted land was granted arms along with it.
This is where the arms were entered in the register. Families often moved to other parts of the country, so the same name can turn up in more than one region.
In Spain, a coat of arms was considered a form of property that belonged to the entire family line. These arms were passed down from a father to all his children equally. Younger branches of the family usually kept the original design without needing to add any special marks to distinguish their specific line.
The surname Aguilar is a topographic name that originated in the medieval kingdoms of Spain, specifically derived from the Latin word *aquila*, meaning eagle. Families who adopted this name often lived near high, rocky places where eagles nested, or they resided in one of the many towns across the Iberian Peninsula named Aguilar. By the time ancestors of this family were documented in the region of Castile in 1722, the name was already well-established throughout the Spanish territories. During this period, the Aguilar family would have been part of the social fabric of Castile, a region central to the political and cultural development of Spain. Members of the family likely worked as landowners, farmers, or local administrators, contributing to the growth of their communities during the eighteenth century. The name serves as a historical link to the geography of the Spanish landscape and the long-standing traditions of families who settled in the Castilian heartland.
Latin word meaning eagle.