I found some information on the Shenandoah, Va genweb website that might shed some light. It is taken from the Shenandoah,Va Minute Book 1781-1785. It states that An overseer of the poor came to bind Landon Warfield, a base born child of Mary Farfield(Warfield) to John McCarty.He is ten years September 1,next. The date was April 29,1784. This seems to indicate that Landon was illigitimate and that his mother was a Warfield, but the father's name is unknown.