There are several maps of land parcels for Pendleton County. which include some original grant configurations but most of the maps are from the late 1800's on so they show divisions from those grants. These can be obtained from the county surveyor of Pendleton County. I had posted images of some of them but there were chronic problems with readers being able to access them.
Steve Zuraff and I had plotted most of the original grants for the northern half of Pendleton County. I'd be happy to post co-ordinates for any parcels in which you have interest (please give me the full name of the grantee, the acreage and date of the grant) - in some cases, I can upload small area maps which show the grant configurations and the relationships of various parcels.