Debbie, I have been trying to find out about your Jacob Tyson for several years. My great grandfather was Jesse Carroll Tyson. Jacob was his father. I did not know the other names you mentioned, but it gives me more information than I had. In our family the story was that Jacob and his brother were orphaned when their parents died from an illness. A neighbor took the boys in and raised them. If that story is true perhaps that was the reason for the name change.