Nielsen Hayden genealogy
Descendants of Beatrix de Pierrepont
- Bef 1203Father: Hugh de Pierrepont ( - Abt 1188)
Mother: Clémence de Réthel
Beatrix de Pierrepont ( - Bef 1203)
William de Warenne (of Wormegay, Norfolk, England - Bef Sep 1209 bur.Southwark Priory, Southwark, Surrey, England)
   └─ Beatrix de Warenne (of Wormegay, Norfolk, England - Bef 12 Dec 1214)
    Doun Bardolf (of Shelford, Nottinghamshire, England - Bef 24 Feb 1205)(m. Bef 1194)
    :   └─ William Bardolf (Abt 1194 of Wormegay, Norfolk, England - 1275)
    :    Nichola
    :       └─ William Bardolf (of Wormegay, Norfolk, England - 1 Dec 1289) =>
    :        + Juliane de Gournay (Abt 1237 of Mapledurham, Oxfordshire, England - Bef 6 Nov 1295)(m. Bef 1254)
    + Ralph (m. Aft Feb 1205)
    Hubert de Burgh (Abt 1170 - 1243 bur.Black Friars, Holborn, London, England)(m. Aft 1208)
       └─ John de Burgh (1210 of Burgh, Norfolk, England - Bef 7 Jan 1275)
        Hawise de Lanvallay ( - 1249 bur.St. John's Abbey, Colchester, Essex, England)(m. Bef 1227)
           └─ John de Burgh (Abt 1235 of Walkern, Hertfordshire, England - Bef 3 Mar 1280) =>
            + Cecily de Balliol ( - Bef 1273)