Nielsen Hayden genealogy
Descendants of (Unknown daughter of William de Warenne)
Father: William III de Warenne (Abt 1119 Warwick, Warwickshire, England - Abt 7 Jan 1148 Laodicea, Anatolia)
Mother: Ela of Ponthieu (of Alencon, Orne, Basse-Normandie, France - 4 Oct 1174)
(Unknown daughter of William de Warenne)
John, King of England (Abt 27 Dec 1166 Oxford, Oxfordshire, England -
19 Oct 1216 Newark Castle, Newark, Nottinghamshire, England)
19 Oct 1216 Newark Castle, Newark, Nottinghamshire, England)
   └─ Richard fitz Roy ( - Bef 24 Jun 1246)
    Rohese de Douvres ( - Bef 11 Feb 1261)(m. Abt 1214)
       ├─ Isabel fitz Richard ( - 7 Jul 1276 bur.Abbey Church of St. Augustine, Bristol, Gloucestershire,
       │ England)
       │ England)
       │ Maurice de Berkeley (1218 of Berkeley, Gloucestershire, England - 4 Apr 1281 bur.Abbey Church of St.
       │ Augustine, Bristol, Gloucestershire, England)(m. Bef 12 Jul 1247)
       │ Augustine, Bristol, Gloucestershire, England)(m. Bef 12 Jul 1247)
       │    └─ Thomas de Berkeley (of Berkeley, Gloucestershire, England -
       │     23 Jul 1321 Berkeley, Gloucestershire, England) =>
       │     23 Jul 1321 Berkeley, Gloucestershire, England) =>
       │     + Joan de Ferrers ( - 19 Mar 1310 bur.Abbey Church of St. Augustine, Bristol, Gloucestershire,
       │     England)(m. 1267)
       │     England)(m. 1267)
       ├─ Richard de Douvres (of Chilham, Kent, England - ??)
       │ + Maud of Angus ( - 1261)(m. Bef 2 Dec 1247)
       └─ 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)