I have a 2 volume set of books (The History of Saint Louis City and County) listed on ebay with extensive biographies and steel plate engravings of prominent people from that area.
Here is a little information from the book: George A. Rubelmann (with a steel engraving portrait of him in the book)....born Tuttlingen, Wurtemberg February 27, 1841....family came to America in 1847....married Sarah A. Guthrie March 14, 1865.......
There is a long detailed biography, but the books are old and turning the pages pulls the spine away. I don't want to damage the books any more than they are, but I hope this information helps you.
I bought the books at an estate sale, and I do not have any relatives in this area. If you are interested the item # is 4206162576