William Shelton will not let go of the past, even if it is in the way of someone else's future. He has spent more than five years rebuilding his family's ancestral home, board by board, and has no intention of leaving it or the 250-acre farm that has been in his family since 1851. Two years ago, surveyors started showing up, wanting a clear idea of his property lines for Texas Central Railway, the company behind plans for a 200-mph "bullet train" connecting Houston to Dallas. The proposed route would go through Shelton's farm. "I guarantee I will be restoring...