This may be a long shot, but I am descended from a Louis Joh that appears to have come over in the 1860s and settled in Montgomery Alabama. The census states he came from Baden, but was working for his future father-in-law, Peter Schwartz who was from Bavaria according to the census. I have no idea at this time how he got there. I haven't seen many ships lists with this surname. Perhaps I should try the surname JOA and see what I come up with. Where did Andreas settle?