I think my information is based on tracing the census sheets I have for Stewart Co, TN and Trigg Co, KY, which gives Silas's age and then tracking back to the one Silas who lived and was born in NC. Do you have copies any of the Census sheets?
There was another Silas, but he died at a young age.
I just moved into a new house and still getting organized. When I locate my sources, I will post again.