I, too, have been searching for Lewis' parents with nothing firm. Apart from the possibility he came from Mars, I have located some land record transfers, etc. with Lewis Foster Nelson and Lavina Nelson signing along with Jo(u)rdan Nelson. I have not yet determined their precise relationship, but am leaning towards Jordan being the father of Lewis Foster Nelson. At least it is a clue that may worth pursuing. If anything definitive is found, I would appreciate knowing.