Mysterious Man from a Non-Existent Continent - Who Was He?

In 1851, in a German village, Frankfurt an der Oder, a lost man came out to the locals asking for help. He introduced himself as Jophar Vorin and spoke very poor German. The man himself claimed that he speaks “Laxar” and “Abram” — languages that don’t actually exist on our Earth. He also claimed to be from “Laxaria” — a country on the mainland called “Sakria”, separated from Europe by a huge ocean. Where did he really come from, and are there others like him?