Definition of the name Macarena
The name Macarena comes from the Arab langues and means "Beatiful", "pretty". You are right about a "barrio" or neighborhood in Sevilla, Spain, in which the name would be more popular since the Virgin Macarena is the patron saint of that "barrio", Santa Cruz. In regards to the related names you mention, as Macario and the others, they don't have anything to do with the name Macarena. Macarena doesn't have a masculine form.
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Please, provide information sources to back up your information :o)