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In the entire world, סרנו (Sereno , Serano , סרנו ) is quite a rare primarily masculine, but very seldom feminine forename. The first name סרנו is habitual in Italy, where it is quite a rare masculine name, Guinea, where it is a rare male name, and the Democratic Republic of the Congo, where it is a rare epicene name. Not in comparison with a country's population, the name is most common in Italy, the Democratic Republic of the Congo, and Brazil. More frequently, סרנו is the last name as well as the forename.
סרנו is also a name for the fictitious and mythical characters: Serano , the operatic character in the opera La donna del lago by Gioachino Rossini; Douglas's retainer.