I have a Caroline Bauer married to a Bernard Hellrung. They lived in Edwardsville and Alton IL. She was born 6-4-1837 in Bavaria and died 12-16-1926 in St. Louis, MO. At least some of their children were born in Alton. Supposedly Caroline's brother went by "von Bauer" and was higly decorated in the Prussian war (family story). If this sounds like it might match what you have, please let me know. Thanks.