Nielsen Hayden genealogy
Descendants of Lora de Douvres
Father: Richard fitz Roy ( - Bef 24 Jun 1246)
Mother: Rohese de Douvres ( - Bef 11 Feb 1261)
Lora de Douvres
William Marmion (of Quinton, Gloucestershire, England - Bef 1277)(m. Bef 7 Jun 1248)
   └─ John Marmion (of Quinton, Gloucestershire, England - Bef 7 May 1322)
    Isabel ( - 1314)
       └─ John Marmion (Abt 1292 of West Tanfield, Yorkshire, England - 30 Apr 1335)
        Maud de Furnival ( - Aft 1347)(m. Abt 4 Jul 1306)
           │ + John de Grey (9 Oct 1300 - 1 Sep 1359 Rotherfield, Oxfordshire, England)(m. Bef 1341)
            + John de Bernake (Abt 1305 of Buckenham, Norfolk, England -
            20 Mar 1346 bur.Hethersett, Norfolk, England)
            20 Mar 1346 bur.Hethersett, Norfolk, England)