The NAB’s notes on that scripture might be useful:
9 [26] Gerasenes: other manuscripts read Gadarenes or Gergesenes. See also the note on Matthew 8:28. Opposite Galilee: probably Gentile territory (note the presence in the area of pigs–unclean animals to Jews) and an indication that the person who receives salvation (Luke 8:36) is a Gentile.
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