Nielsen Hayden genealogy
William IX of Aquitaine
1071 - 1126 (54 years)1. William IX of Aquitaine was born on 22 Oct 1071 (son of Guy-Geoffrey of Poitou and Hildegarde of Burgundy); died on 10 Feb 1126. Family/Spouse: Dangereuse. Dangereuse was born about 1079; died after 1119. [Group Sheet] [Family Chart]
William married Philippa of Toulouse in 1094. Philippa (daughter of William IV of Toulouse and Emma of Mortain) died on 28 Nov 1117. [Group Sheet] [Family Chart]
Children:- William X of Aquitaine was born in 1099; died on 26 Mar 1136 in Santiago de Compostela, Galicia, Spain.
- Agnes of Aquitaine was born about 1105; died about 1159.
2. Guy-Geoffrey of Poitou was born about 1024 (son of William III of Poitou and Agnes of Burgundy); died on 25 Sep 1086 in Chizé, Deux-Sèvres, Poitou-Charentes, France. Guy-Geoffrey married Hildegarde of Burgundy in 1069. Hildegarde (daughter of Robert I and Ermengarde of Anjou) was born about 1050; died after 1104. [Group Sheet] [Family Chart]
3. Hildegarde of Burgundy was born about 1050 (daughter of Robert I and Ermengarde of Anjou); died after 1104. Children:
- 1. William IX of Aquitaine was born on 22 Oct 1071; died on 10 Feb 1126.
Generation: 3
4. William III of Poitou was born in 969 (son of William II of Poitou and Emma of Blois); died on 31 Jan 1030. William married Agnes of Burgundy. Agnes (daughter of Otto-William of Burgundy and Ermentrude de Roucy) was born about 995; died on 10 Nov 1068; was buried in Abbey of St. Nicolas de Poitiers, Vienne, Poitou-Charentes, France. [Group Sheet] [Family Chart]
5. Agnes of Burgundy was born about 995 (daughter of Otto-William of Burgundy and Ermentrude de Roucy); died on 10 Nov 1068; was buried in Abbey of St. Nicolas de Poitiers, Vienne, Poitou-Charentes, France. Children:
- William VII was born about 1023; died in 1058.
- 2. Guy-Geoffrey of Poitou was born about 1024; died on 25 Sep 1086 in Chizé, Deux-Sèvres, Poitou-Charentes, France.
- Agnes of Poitou was born about 1025; died on 14 Dec 1077 in Rome.
- Béatrice de Poitou was born about 1028.
6. Robert I was born about 1011 (son of Robert II, King of France and Constance of Provence, Queen Consort of France); died on 21 Mar 1075. Robert married Ermengarde of Anjou about 1048. Ermengarde (daughter of Foulques III "Nerra" and Hildegarde de Lorraine) was born about 1018; died on 18 Mar 1076. [Group Sheet] [Family Chart]
7. Ermengarde of Anjou was born about 1018 (daughter of Foulques III "Nerra" and Hildegarde de Lorraine); died on 18 Mar 1076. Children:
- 3. Hildegarde of Burgundy was born about 1050; died after 1104.
Generation: 4
8. William II of Poitou was born in 935 (son of Guillaume "Tête-d'Étoupe" and Adèle of Normandy); died on 3 Feb 993. William married Emma of Blois in 968. Emma (daughter of Thibaut I of Blois and Luitgarde de Vermandois) was born in 950; died about 1003. [Group Sheet] [Family Chart]
9. Emma of Blois was born in 950 (daughter of Thibaut I of Blois and Luitgarde de Vermandois); died about 1003. Children:
- 4. William III of Poitou was born in 969; died on 31 Jan 1030.
10. Otto-William of Burgundy was born before 962 (son of Adalberto, Joint King of Italy and Gerberge); died before 21 Sep 1026; was buried on 21 Sep 1026 in Dijon Cathedral, Dijon, Côte-d'Or, Burgundy, France. Otto-William married Ermentrude de Roucy. Ermentrude (daughter of Renaud I and Alberade de Lorraine) was born about 950; died on 5 Mar 1002. [Group Sheet] [Family Chart]
11. Ermentrude de Roucy was born about 950 (daughter of Renaud I and Alberade de Lorraine); died on 5 Mar 1002. Children:
- Matilda of Burgundy died on 13 Nov 1005; was buried in Cathedral of Saint-Etienne d'Auxerre, Auxerre, Yonne, France.
- Renaud I died in 1057.
- Gerberga of Mâcon died between 1020 and 1023.
- 5. Agnes of Burgundy was born about 995; died on 10 Nov 1068; was buried in Abbey of St. Nicolas de Poitiers, Vienne, Poitou-Charentes, France.
12. 
Robert II, King of France was born about 970-974 in Orléans, Loiret, France (son of Hugues Capet, King of France and Adélaïde, Queen Consort of France); died on 20 Jul 1031 in Château Melun, Seine-et-Marne, Île-de-France, France; was buried in Abbey of Saint-Denis, Saint-Denis, France. Robert married Constance of Provence, Queen Consort of France about May 1004. Constance (daughter of Guillaume I "le Liberateur" and Adelaide-Blanche of Anjou) was born between 985-990; died on 22 Jul 1034 in Melun, Seine-et-Marne, Île-de-France, France; was buried in Abbey of Saint-Denis, Saint-Denis, France. [Group Sheet] [Family Chart]
13. Constance of Provence, Queen Consort of France was born between 985-990 (daughter of Guillaume I "le Liberateur" and Adelaide-Blanche of Anjou); died on 22 Jul 1034 in Melun, Seine-et-Marne, Île-de-France, France; was buried in Abbey of Saint-Denis, Saint-Denis, France. Children:
- Hedwig of France died after 5 Jun 1063.
- Henri I, King Of France was born before 17 May 1008; died on 4 Aug 1060; was buried in Abbey of Saint-Denis, Saint-Denis, France.
- St. Adele of France was born between 1010 and 1015; died on 8 Jan 1079; was buried in Abbey of Messines, Ypres, Flanders.
- 6. Robert I was born about 1011; died on 21 Mar 1075.
14. Foulques III "Nerra" (son of Geoffroi I Grisegonelle and Adèle of Troyes); died on 21 Jun 1040 in Metz, Moselle, Lorraine, France. Foulques married Hildegarde de Lorraine after 1000. Hildegarde died on 1 Apr 1040 in Jerusalem. [Group Sheet] [Family Chart]
15. Hildegarde de Lorraine died on 1 Apr 1040 in Jerusalem. Children:
- 7. Ermengarde of Anjou was born about 1018; died on 18 Mar 1076.