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Sebastián is the Spanish and Portuguese form of the Latin name Sebastianus, derived from the Greek Sebastianos, meaning "from Sebastia," a city in ancient Asia Minor whose own name comes from the Greek sebastos, meaning "venerable" or "revered," the equivalent of the Latin augustus. The name gained widespread Christian use through Saint Sebastian, a third-century Roman martyr whose popularity made the name common throughout medieval Europe. Related forms include Sebastian in English and German, Sébastien in French, Sebastiano in Italian, and Sebastião in Portuguese.