Sometimes the oral traditions passed down are more accurate than the written records of the period... anyways I am guessing from the entry you are working from the LDS genealogies - I try to only use their records indexes, and since transcription errors are frequent I always try to see a scan of the orignal if possible.
I normally work with Canadian and Dutch records but there is a list of German genealogy resources here that seems fairly comprehensive:
http://home.bawue.de/~hanacek/info/edatbase.htm
As far as Virginia records perhaps this will help:
http://www2.lib.virginia.edu/genealogy/
For the time period of the 1760's census records will probably be of little use since they tended to only name heads of household, but you could try finding wills and probate which tend to name spouses and children as well as siblings, and others. Tax or property records may also prove useful.
You might also find it useful to look at German naming patterns of the period to help you piece together the relationships (and other names to watch for), there is a fairly detailed treatment of the subject at this link.
http://www.kerchner.com/germname.htm