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Throughout the world, Castiella (Ketela , Castiella , Castile ) is quite a rare epicene first name. The given name Castiella is habitual in Ethiopia, where it is quite a rare epicene name, South Africa, where it is a very rare boy's name, and India, where it is an extremely rare gender-neutral name. Likewise, Castiella is the last name as well as the forename.
Castiella is also a name for the fictitious and mythical characters: .