On 3 Jun 1857 Herman Trendel, age 19, a grocer, arrived in the Port of New York on the Orpheus. Having sailed from Bremerhaven, Germany. His stated destination was New York.
In 1870 Herman Trendel is residing in Chicago, Cook, Illinois working as a driver. Living with him are his wife, Caroline Mack and three sons: Herman, Theodore and Julius. In 1880 Caroline is listed as a widow and a daughter Caroline has been added to the family.
The likelyhood is that this is the same man. There is no Herman Trendel found living in New York in 1870. Herman may have made connections on the voyage with passengers destined for Chicago, there were some.
All four children were married and had children.
So the question is, who is Herman Trendel? Where in Germany did he come from? It appears that Caroline was from Baden and Catholic, was Herman Catholic as well?
While following German families is not going to add to my own genealogy, following these families does help in sorting through records that might be relevant.