I wish I could say I have information for you, but I don't. Ross County has a wonderful Web Site (http://www.scioto.org/Ross/index.html) and I checked out John Abernathy. He is recorded as marrying a Catherine Sandcaster on May 21, 1818. It is quite possible that "Sandcaster" is actually 'Nungester'and simply miscopied due to poor handwriting of the recorder. There are no other 'Sandcasters' in Ross County, so I suspect this is the case.