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All around the world, Cecilio (Cecilio , ססיליו , Caecilius) is a common boy's first name. The forename Cecilio is habitual in Latin America and the Caribbean, particularly Mexico, where it is quite a common boy's name, Nicaragua, and Panama (explore the name in all countries). Measured by absolute frequency, it is commonest in Mexico, Philippines, and Brazil. Likewise, Cecilio is the last name as well as the forename.
Cecilio is also a name for the fictitious and mythical characters: Cecilio (Cecilius) , the operatic character in the opera Lucio Silla by Wolfgang Amadeus Mozart.