APPOMATTOX COUNTY, Va. Appomattox is known worldwide as the place where the American Civil War ended. But for David Christian, the county goes beyond U.S. history. Generations of his ancestors have stewarded 450 acres there since 1808, and many are buried in a family cemetery on the property. "It has been a family cemetery for a couple of hundred years," Christian said. "I think it is important for people to know their heritage and where they ca…