It might be a lot of work, but you could start by looking at Levi's siblings to see what sources you can find for them. At a quick glance it seems that several of them also moved to Ohio/Illinois/Wisconsin.
Once you have a collection of family names to look for, and a good idea of what county they settled in, try local county histories. These often talked about early settlers, and often the extended family. (gah, something strange going on with WikiTree, can't find the space page that lists these.) For sure you can try the Historical Encyclopedia of Illinois, which you can find at Archive.org. Ohio and Wisconsin also have county histories. You might also find these by going to FamilySearch catalog and search by place.