In the late 70s when I was a child, a woman named Marie Loth Harris contacted my family and many of our relatives to gather information for a Loth family genealogy, which she later sent a copy of. I can't find my copy, and I'm wondering is anyone else has one and would be willing to copy or scan it for me (at my expense, of course).
I believe she traced the family back to Bernard and Pauline Loth, from somewhere in Austria. They did not emigrate to the US, but several of their children did, including my great-grandfather Samuel. Most of the family settled in Cincinnati, if I recall correctly.