Nielsen Hayden genealogy
Descendants of Richard Deuclive
Richard Deuclive
   └─ (Unknown daughter of Richard Deuclive)
    John Giffard (of Halsbury, Devon, England - ??)
       └─ Thomas Giffard (of Halsbury, Devon, England - ??)
        Wilmot Knight
           └─ John Giffard (of Halsbury, Devon, England - 1491) =>
            + Joan d'Abernon (10 Sep 1434 - ??)