Perhaps you have learned a lot since you posted this message in 2007. If you are still having trouble finding data you might try www.familysearch.org and you can find a great deal more.I thank you for suppllying the names ofyour grandparents and parents.I added them to my file.
And the 1940 census will be released fairly soon - around April 2, 2012.
I haven't done any work on this line for a long time. My interest is primarily with John Wesley Horseman b 1744-1745 VA who married Sarah Blundon and I keep pretty up0 to date on that line.