I do not have any info on Samuel or Caroline, but I may have a sibling of Samuel. Marie Kahn(e) b:1827;d:1884. She Married Heinrich B. Evers. They were listed in the 1865 Cincinnati directory living at 11 Budd St. 1870 Census listed them with 5 children: Anthony, Frances, Frank Henry, Anna, and Elizabeth. If we can connect these people, we may have more resources to aid both of our searches.