This is so exciting to find someone else that has the same family. There is a few details that are missing.In 1848 Mathias Lux and Mary Catherine had a daughter named Mary Elizabeth(b. 4/8 or 9, 1848 in Prussia.She was 1 yrs. old(1849)when they arrived in the U.S. to Schenectady, New York.They moved to Dubuque, Iowa in 1855.In 1870, Jan.17th Mary E. marriedJohn Peter McElmeel in the Catholic church in Dyersville,Iowa. They had 9 children: Helen K., Stephen E., Margaret, Eugene, James M., Martin John, John, Roseanna, and my great, great grandfather Gerald Francis.There was also a John Lux(Mathias and Mary Cathrine's) and of cousre Peter.I'm hoping this is the same family. There's more. Was Mathias also called Matthew? Let me know if I have a hit.