Castillo

The origin of the surname Castillo

Castillo was given to someone who lived by a castle.

What kind of surname is Castillo?

As a toponymic (locational) surname, the surname Castillo originally described where its bearer lived or came from — a village, region, landscape feature or landmark. When people moved from one place to another, neighbours often identified the newcomer by their place of origin, and that association became a lasting family name. Some toponymic surnames name a specific town or county; others describe the local terrain, such as a hill, wood, field, ford or bridge beside which a family lived. These names are a kind of map of migration and settlement, recording where earlier generations put down roots.

How Spanish surnames work

Spanish surnames classically use the patronymic suffix “-ez” meaning “son of” — González (“son of Gonzalo”), Rodríguez, Martínez, Fernández. Alongside these are locational names (often with “de”) and occupational or descriptive names. Spanish-speaking cultures also traditionally carry two surnames, the father's followed by the mother's, so a full name preserves both family lines.