In what way does the title of the story contribute to its meaning? How has the author used irony in his choice of title?

An interloper is an intruder, and thus, the main idea of the plot involves two men arguing over a piece of land, while each claims it belongs to him. The irony can be found in the fact that each man will always be considered an interloper in one way or another because no one will know that they've reconciled their differences.