Nielsen Hayden genealogy
Descendants of Gruffydd ap Llywelyn, King of Wales
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Father: Llywelyn ap Seisyll, King of Deheubarth
(Abt 980 - 1023)
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Mother: Angharad ferch Maredudd
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Gruffydd ap Llywelyn, King of Wales ( - 5 Aug 1064 Ireland)
       │
Bernard de Neufmarché
(of Neuf-Marche, Normandy, France - 1093)(m. Between 1086 and 1088)
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       │    └─ Sibyl de NeufmarchĂ©
(of Brecon, Breconshire, Wales -
       │     ?? bur.Llanthony Priory, outside Gloucester, Gloucestershire, England) =>
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       │     ?? bur.Llanthony Priory, outside Gloucester, Gloucestershire, England) =>
       │     + Miles of Gloucester
(Abt 1100 -
       │     24 Dec 1143 bur.Llanthony Priory, outside Gloucester, Gloucestershire, England)(m. 1121)
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       │     24 Dec 1143 bur.Llanthony Priory, outside Gloucester, Gloucestershire, England)(m. 1121)
       └─ Hugh fitz Osbern
(of Richard's Castle, Herefordshire, England - 1140)
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           └─ Hugh de Say
(of Richard's Castle, Herefordshire, England - Bef 29 Sep 1190) =>
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            + Lucy de Clifford
(of Clifford, Herefordshire, England - ??)
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