Finding Mineral Rights in Marion County WV

I was originally contacted by a company doing ancestry research for a few parcels where my grandfather retained the mineral rights after he sold the land. A few years later I received a lease agreement for different parcels than I was originally contacted about. Now I have decided to see if I can find any other parcels that may be out there. So my question is, does anyone know of a website for WV (Marion County) that would contain that information? Or offer a place to start. Thanks

@GBrock57 , here is a possible place to start searching MarionWVSearch