 Why does no one on town know who Haron Gorka is?
The name—Haron Gorka: its oddness was somehow beautiful to Matilda. Haron Gorka—the nationality could be anything. "I said, where can I find Haron Gorka?" First place, I don't know any Haron Gorka—" Matilda kept the alarm from creeping into her voice. As far us the gentry of Cedar Falls was concerned, Haron Gorka did not exist. If she could not find Haron Gorka, that was one thing; but she knew that she'd rather not return home and face the widow Penshaws, at least not for a while yet.
 He’s not a real resident, but an interstellar visitor.
 Haron Gorka isn’t his real name. Thus, there’s no records of him.  He’s not a real resident. He’s using a fake name while he stays in town.  He travels so much that the people in town haven’t gotten to know him.  He’s not a real resident, but an interstellar visitor.