We often suggest to researchers that people move in groups and settle where they know someone. And most of the time people do. Keep in mind that once in a while people move where they know absolutely no one. One ancestral couple could not be located. They simply evaporated. They were not near any of their chidlren, any of his siblings, or any of her siblings. They migrated to an area of Missouri where no one they knew lived. Sometimes it does happen.