Nielsen Hayden genealogy
Descendants of Stephen of Blois, King Of England
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Father: Etienne Henri
(1046 - 19 May 1102 Ramallah, Palestine)
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Mother: Adela of Normandy
(Abt 1061 - 8 Mar 1137 Convent of Marcigny-sur-Loire, France)
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Stephen of Blois, King Of England (Abt 1092 Blois, Loir-et-Cher, France - 25 Oct 1154 Dover, Kent, England)
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   └─ Marie of England
(1136 - 1182 Monastery of Sainte-Austreberthe, Montreuil, France)
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Mathieu of Flanders
(Abt 1138 - 25 Jul 1173 Driencourt, Somme, Picardy, France)(m. 1160)
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       └─ Machtild of Boulogne
(Abt 1169 - Between 1210 and 1211 bur.Afflighem Abbey, Brabant, Belgium)
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           │ + Gerhard van Gelre
(Abt 1185 - 22 Aug 1229)(m. Abt 1206)
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           │ + Guillaume IX d'Auvergne
(Abt 1195 - 1246)(m. Bef 3 Feb 1225)
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           │ + Floris IV of Holland
(24 Jun 1210 - 19 Jul 1234)(m. Aft 5 Nov 1214)
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            + Maria von Hohenstaufen
(Abt 1201 - 1235)(m. 22 Aug 1215)
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            + Sophia von Thüringen
(20 Mar 1224 - 29 May 1275)(m. 1240)
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