Nielsen Hayden genealogy
Ancestors of Mechtild
┌── Adalbert (Abt 1060 - Between 1124 and 1125)
│ ┌── Richwin
│ ┌── Louis de Montbéliard (Between 1005 and 1019 - Between 1070 and 1073)(m. 1032)
│ │ │ ┌── Hugo VI of Egisheim (Abt 970 - ??) =>
│ │ └── Hildegarde of Egisheim
│ │ └── Heilwig von Dagsburg ( - 1046)
│ │
│ ┌── Thierry I of Bar-le-Duc (Abt 1045 - 2 Jan 1105)(m. Abt 1065)
│ │ │
│ │ │ ┌── Frederick II of Lorraine (Abt 995 - 1027)(m. Aft 1011)
│ │ │ │
│ │ └── Sophie of Bar (Bef 1020 - 1092)(m. 1032)
│ │ │
│ │ │ ┌── Hermann II of Swabia ( - 4 May 1003)(m. Abt 988) =>
│ │ └── Mathilde of Swabia ( - Abt 1032)(m. Aft 1011)
│ │ └── Gerberga of Burgundy ( - Aft 1016)(m. Abt 988) =>
│ │
│
│ ┌── Otto-William of Burgundy (Bef 962 - Bef 21 Sep 1026 bur.Dijon Cathedral, Dijon,
│ │ Côte-d'Or, Burgundy, France) =>
│ │ Côte-d'Or, Burgundy, France) =>
│ ┌── Renaud I ( - 1057)(m. Bef 2 Nov 1023)
│ │ └── Ermentrude de Roucy (Abt 950 - 5 Mar 1002) =>
│ │
│ ┌── William I "The Great" of Burgundy ( - 12 Nov 1087)(m. Between 1049 and 1057)
│ │ │
│ │ │ ┌── Richard II ( - 23 Aug 1026 Fécamp, Normandy, France)(m. Abt 1000) =>
│ │ └── Adélaïde of Normandy ( - Aft 1074)(m. Bef 2 Nov 1023)
│ │ └── Judith of Brittany (982 - 28 Jun 1017 bur.Bernay Abbey, Bernay, Normandy, France)
│ │ (m. Abt 1000) =>
│ │
└── Ermentrude of Burgundy ( - 8 Mar 1105)(m. Abt 1065)
└── Stephanie ( - Aft 1092)(m. Between 1049 and 1057)