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All over the world, Ээро (Eero , Ээро ) is quite a rare boy's first name. The first name Ээро is habitual in Northern Europe, particularly Finland, where it is quite a common masculine name, Estonia, where it is quite a rare masculine name, and Sweden, where it is a rare male name. Measured by absolute frequency, it most frequently occurs in Finland, the United States, and Estonia. Very seldom, Ээро is the last name as well as the forename.
Ээро is also a name for the fictitious and mythical characters: Eero , the literary character from Aleksis Kivi's Seitsemän veljestä, The Seven Brothers and Eero Koskela .