Nielsen Hayden genealogy
Descendants of William de Vernon
William de Vernon
   └─ Cecily de Vernon
    John Cokayne (of Ashbourne, Derbyshire, England - 1372)
       └─ John Cokayne (of Cockayne Hatley, Bedfordshire, England -
        22 May 1429 bur.Cockayne Hatley, Bedfordshire, England)
        22 May 1429 bur.Cockayne Hatley, Bedfordshire, England)
        Ida Grey ( - 1 Jun 1426 bur.Cockayne Hatley, Bedfordshire, England)(m. Bef 1394)
            + Lawrence Cheyne (Abt 1396 of Fen Ditton, Cambridgeshire, England -
            : 31 Dec 1461 bur.Barnwell Priory, Cambridgeshire, England)
            : 31 Dec 1461 bur.Barnwell Priory, Cambridgeshire, England)
            + Philip le Boteler (Abt 1388 of Watton Woodhall in Watton at Stone, Hertfordshire, England -
            5 Nov 1420 bur.Watton at Stone, Hertfordshire, England)(m. Bef 1412)
            5 Nov 1420 bur.Watton at Stone, Hertfordshire, England)(m. Bef 1412)