All my Iowa information is on my Maul line. I do have that a Jacob Rossman, age 24, born in Hess Darmstadt, is enumerated on the 1860 Rhine, Sheboygan County, Wisconsin census. This Jacob is married to Catherine, age 22, also born in Hess. They have two children: Louis 3 and George 1, both born in Wisconsin. I believe that this is the same Jacob who traveled on the clipper ship Cornelius Grinnell with his cousins Philip Maul and Eliza Gotz, but have no proof. I did not research the Rossman line further after their arrival in the US, concentrating on Maul. However, you are welcome to the information I have on my Maul's. I do have an original flysheet from the 1850 London Times of the ship and a very small photo of Philip and Eliza's daughter, Emma, taken from an old snapshot. I also have the Rossman lineage back to 1674 with connected families. Please email me at firstname.lastname@example.org.