According to folk legend, the name Casiguran was obtained from the Hispano-Filipino term "Kasiguruhan" which means "safety" or "assurance", such as a fortress or sanctuary for sailing ships during stormy weather.
According to folk legend, the name Casiguran was obtained from the word "Kasiguruhan" which means "safety" or "assurance". Safety means defense-a fortress or sanctuary for sailing ships during stormy weather.