Individual #Damon_and_Pythias  (Greek mythology) according to a Greek legend: when Pythias was sentenced to be executed Damon took his place to allow Pythias to get his affairs in order; when Pythias returned in time to save Damon the king was so impressed that he let them both live
  type:  friend  a person you know well and regard with affection and trust; "he was my best friend at the university"

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