Barbara,
I also have a gggrandfather that came to U.S. from Switzerland in about 1847. He ended up in the St. Louis, Missouri area and is listed in the 1860 census there (Ward 7). From trying to read an entry from his diary, he was from "Ober Hallau Canton Shaffhous, Switzerland. Via Havre te Grace. He stated that he was coming to U.S. to visit relatives. He married a lady, Catherine Haltgraffer, who was from Germany and lived in St. Clair County, Illinois.
I have always wanted to try and find out something about his family but have never been able to make a connection. I would be interested in the history you have on the Auer family, if you would care to share it. I also would be glad to share any of what I have about John Jacob Auer and up to present time.
Thanks in advance,
Charlie Auer
CharlieHAuer@aol.com