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Last name origins & meanings:

  1. Italian: from the imperial Roman personal name Barbarus (for the etymology see Barbara 1).
  2. Italian: from Barbaro, a byname or nickname also originally denoting a person of non-Greek or Roman origin, which in the Middle Ages came to mean a non-Christian, specifically an Arab or Saracen. Compare Barbary.
  3. Italian: from barbarus, from Castilian bravo ‘fierce’, ‘brave’.