Bede the Venerable — as excerpted in the Catena Aurea on Luke 8:26-39

“Now mystically; Gerasa signifies the Gentile nations, whom after His passion and resurrection Christ visited in His preachers. Hence Gerasa or Gergesa, as some say, is by interpretation “casting out an inhabitant,” that is, the devil by whom it was before possessed, or, “a stranger approaching,” who before was afar off.”