Nielsen Hayden genealogy
Descendants of Geoffroi VI de Châteaudun
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Father: Geoffroi V de Châteaudun
( - Aft Nov 1218)
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Mother: Adèle de Donzy
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Geoffroi VI de Châteaudun (1218 - 6 Feb 1250)
   └─ Jeanne de Châteaudun
( - Abt 1254 bur.Maubuisson Abbey near Pontoise, near Paris, France)
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Jean de Brienne
( - 8 Jan 1296 bur.Maubuisson Abbey near Pontoise, near Paris, France)(m. 1251)
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Guillaume de Fiennes
(of Wendover, Buckinghamshire, England - 11 Jul 1302 Kortrijk, Flanders)
        (m. Between 18 Jan 1266 and Feb 1267)
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        (m. Between 18 Jan 1266 and Feb 1267)
           │ + Edmund de Mortimer
(Between 1251 and 1254 of Wigmore, Herefordshire, England -
           │ 17 Jul 1304 Wigmore Castle, Herefordshire, England)(m. Bef 12 Dec 1285)
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           │ 17 Jul 1304 Wigmore Castle, Herefordshire, England)(m. Bef 12 Dec 1285)
           │ + John Wake
(Abt 1268 - Abt 10 Apr 1300)(m. Bef 24 Aug 1291)
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