Nielsen Hayden genealogy
Descendants of Maud of Boulogne, Queen Consort of England
Abt 1072 - 1151 (~ 79 years)Father: Eustache III of Boulogne ( - Aft 1125)
Mother: Mary of Scotland ( - 18 Apr 1118)
Maud of Boulogne, Queen Consort of England (Abt 1072 - 30 May 1151 bur.Faversham Abbey, Kent, England)
Stephen of Blois, King Of England (Abt 1092 Blois, Loir-et-Cher, France - 25 Oct 1154 Dover, Kent, England)(m. 1125)
   ├─ Eustace IV ( - 10 Aug 1153 bur.Faversham, Kent, England)
   │ + Constance of France ( - 16 Aug 1176 Rheims, Marne, Champagne-Ardenne, France)
   └─ Marie of England (1136 - 1182 Monastery of Sainte-Austreberthe, Montreuil, France)
    Mathieu of Flanders (Abt 1138 - 25 Jul 1173 Driencourt, Somme, Picardy, France)(m. 1160)
       ├─ Ida of Flanders ( - 1216)
       │ + Berchtold IV von Zähringen (Abt 1125 - 8 Dec 1186)(m. 1183)
       └─ Machtild of Boulogne (Abt 1169 - Between 1210 and 1211 bur.Afflighem Abbey, Brabant, Belgium)
        Henri I of Brabant (Abt 1158 - 5 Sep 1235 Koln, Germany)(m. 1179)
           │ + Gerhard van Gelre (Abt 1185 - 22 Aug 1229)(m. Abt 1206)
           │ + Guillaume IX d'Auvergne (Abt 1195 - 1246)(m. Bef 3 Feb 1225)
           │ + Floris IV of Holland (24 Jun 1210 - 19 Jul 1234)(m. Aft 5 Nov 1214)
            + Maria von Hohenstaufen (Abt 1201 - 1235)(m. 22 Aug 1215)
            + Sophia von Thüringen (20 Mar 1224 - 29 May 1275)(m. 1240)