It becomes evident to Enrico very quickly that these two men were not a threat to his horse. They found the animal on the beach and were interested, but presumed that whoever left the horse here was bound to come back quickly. They have, in fact, been looking after the horse without being asked, as a matter of course.
Their names are Anticles and Pericles. They're brothers. They're on their way to a small town in Thrace, Igneada, where they are to become part of a ship's crew. They were recruited in Canakkale a week ago and told to head to that point.