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Worldwide, Castelo (Castelo , كاستيلو ) is a rare unisex forename. The forename Castelo is characteristic of Angola, where it is quite a rare masculine name, the Democratic Republic of the Congo, where it is a rare feminine name, and Philippines, where it is a very rare primarily boy's, but very seldom female name. More prevalently, Castelo is the last name as well as the forename.
Castelo is also a name for the fictitious and mythical characters: .