Nielsen Hayden genealogy
Descendants of Maud d'Avranches
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Father: Robert d'Avranches
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Mother: (Unknown daughter of Gelduin of Dol)
(of Dol-de-Bretagne, Brittany, France - ??)
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Maud d'Avranches ( - 21 Sep 1173)
   └─ Hawise de Courcy
(Abt 1157 of Okehampton, Devon, England - 31 Jul 1219 bur.Ford Abbey, Dorset, England)
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Reynold de Courtenay
(Abt 1150 of Okehampton, Devon, England - 27 Sep 1194 bur.Ford Abbey, Dorset, England)
    (m. Between 1173 and 1178)
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    (m. Between 1173 and 1178)
       └─ Robert de Courtenay
(Abt 1183 of Okehampton, Devon, England - 26 Jul 1242 Iwerne, Dorset, England)
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           ├─ Hawise de Courtenay
(of Okehampton, Devon, England - Bef 8 Apr 1269) =>
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           │ + John de Neville
(of Little Hallingbury, Essex, England -
           │ : Bef 8 Jun 1246 bur.Waltham Abbey, Essex, England)(m. Bef 15 Feb 1230)
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           │ : Bef 8 Jun 1246 bur.Waltham Abbey, Essex, England)(m. Bef 15 Feb 1230)
           │ + John de Gatesden
(of Broadwater, Sussex, England - Bef 17 Oct 1262)(m. Bef 12 Apr 1254)
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           └─ John de Courtenay
(of Okehampton, Devon, England - 3 May 1274 bur.Ford Abbey, Dorset, England) =>
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            + Isabel de Vere
( - Bef 7 Jan 1291 bur.Cowick Priory, Exeter, Devon, England)(m. Aft 6 Oct 1240)
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