I haven't been able to trace my Smiths back this far, yet, but I have come across an abstract of a Land Patent issued to Mr. William Young, 998 acres in Rappahannock County, Virginia. The patent was issued 21 Oct 1684 in Patent Book 7, page 404. I found this abstract in "Cavaliers and Pioneers; Abstracts of Virginia Land Patents and Grants, Volume Two." Most libraries have this series of books. Happy hunting!