My Great grandmother was a Rohling.Her name was Katherine A. Rohling, born 7 Jul 1882, in Galveston, TX.Her father, Frank John Rohling immigrated to the U.S.(as a child) from Germany in 1857, through New Orleans. He and his wife Ellen Speyer (Spier) had 11 children. They later moved to the Galveston area.
I do know that it appears that Frank John Rohling came to the US with at least one brother,Benjamin Rohling.On a 1870 census of New Orleans, it states that the family came from Bavaria. On other things it justs states Germany. I found a record on an 1860 census of a John Rohling that is 15 years old.He is listed as coming from West Phalia, Prussia.
I would love to share information with anyone who has information on this ellusive family! You can e-mail me directly, if you like.