Just saw your posting. My family has a Michael Radel, in Cinn, Ohio 1860's as well. I wonder if this is the same Michael that is in my family. Would be wonderful if I finally know when and where he arrived. Will share any info that I have. One of his sons is Peter born 1856. He is the father of my connection named Michael born in 1880. This is my grandmother's father.
If you know anything further please let me know. It would be fun to share info.