Nielsen Hayden genealogy
Descendants of Gilbert I de Gant
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Father: Ralph de Gand
( - Between 1052 and 1056)
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Mother: Gisela of Luxembourg
( - Aft 1058 bur.Chapel of St. Lawrence, Ghent, Flanders)
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Gilbert I de Gant (Abt 1034 of Folkingham, Bourne, Lincolnshire, England - Abt 1095 bur.Bardney Abbey, Yorkshire, England)
   ├─ Walter de Gant
(of Folkingham, Bourne, Lincolnshire, England - 1139 Bardney Abbey, Yorkshire, England)
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   │    │
William de Mohun
(Bef 1110 of Dunster, Williton, Somerset, England - Aft 1142)
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   │    │    └─ William de Mohun
(of Dunster, Williton, Somerset, England - 1176) =>
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   │    │    └─ Nele de Mowbray
(of Thirsk, Yorkshire, England - 1191 Acre, Palestine) =>
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   │    └─ Robert de Gant
(of Folkingham, Bourne, Lincolnshire, England -
   │     1191 bur.Vaudey Abbey, Lincolnshire, England)
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   │     1191 bur.Vaudey Abbey, Lincolnshire, England)
   │     :   └─ Gilbert de Gant
(Abt 1180 of Folkingham, Bourne, Lincolnshire, England - Bef 22 Jan 1242) =>
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   │     :    +
   
Alan de Percy
(of Topcliffe, Yorkshire, England - Bef Dec 1135 bur.Whitby, Yorkshire, England)
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       └─ William de Percy
(of Topcliffe, Yorkshire, England -
        Between 1174 and 1175 bur.Fountain Abbey, Yorkshire, England)
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        Between 1174 and 1175 bur.Fountain Abbey, Yorkshire, England)
        :   └─ Agnes de Percy
( - Bef 13 Oct 1204 bur.Whitby, Yorkshire, England) =>
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        :    + Joscelin of Louvain
(of Petworth, Sussex, England - 1180)(m. Between 1154 and 1161)
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        + Sybil de Valognes
( - Aft 1212 bur.Nun Appleton Priory, Yorkshire, England)(m. Between 1164 and 1166)
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