Shakespeare's grave is famous for having a curse as an epitaph on its' gravestone which Shakespeare himself wrote. Relic hunting was popular in Shakespeare's day, and Shakespeare was aware his status as a leading writer may have meant his bones would be dug up by one of the hunters.
His plan was to instigate a major slave rebellion in the South. He would seize the arms and ammunition in the federal arsenal, arm slaves in the area and move south along the Appalachian Mountains, attracting slaves to his cause.