Nielsen Hayden genealogy
Descendants of Gertrude of Flanders
Abt 1070 - 1117 (~ 47 years)Father: Robert I "The Frisian" (Abt 1035 - 3 Oct 1093)
Mother: Gertrude of Saxony (Abt 1030 - 4 Aug 1113)
Gertrude of Flanders (Abt 1070 - 1117)
Henry III of Louvain ( - 1095 Tournai, Hainaut, Belgium)(m. Abt 1090)
:   └─ Adelaide of Louvain ( - Aft 4 Nov 1158)
:    Simon I of Lorraine (Abt 1076 - 14 Jan 1138)
:       ├─ Agatha of Lorraine ( - 1147)
:       │ Renaud III of Burgundy (Abt 1093 - 1148)
:       │    └─ Beatrice of Burgundy (Abt 1144 - 15 Nov 1184 Jouhe, Jura, France) =>
:       │     + Frederick Barbarossa, Holy Roman Emperor (1122 - 10 Jun 1190 Saleph River, Cilicia, Anatolia)
:       │     (m. 9 Jun 1156 Würzburg, Germany)
:       │     (m. 9 Jun 1156 Würzburg, Germany)
:       ├─ Bertha of Lorraine ( - Aft 1162)
:       │ Hermann III (Abt 1090 - 16 Jan 1160)(m. Bef 1134)
:       │    └─ Hermann IV von Baden (Abt 1135 - 13 Sep 1190 Antioch, Anatolia) =>
:       │     + Bertha ( - 24 Feb 1169)(m. Bef 1162)
:       └─ Matthias I of Lorraine (Abt 1119 - 13 May 1176)
:        Bertha of Swabia (1123 - Aft Mar 1195)(m. Abt 1138)
:           │ + Stephen II of Burgundy ( - Aft 21 Jul 1173)
:           │ + Ludmilla of Poland (Abt 1150 - 1223)
:            + Hugh III of Burgundy (Abt 1148 - 25 Aug 1192 Tyre)(m. 1165)
Thierri II of Lorraine ( - 1115)(m. Between 1095 and 1096)
   └─ Thierri III of Lorraine (Abt 1098 - 17 Jan 1168)
    Sibyl of Anjou (1112 - 1165)(m. 1131)
       ├─ Mathieu of Flanders (Abt 1138 - 25 Jul 1173 Driencourt, Somme, Picardy, France)
       │ Marie of England (1136 - 1182 Monastery of Sainte-Austreberthe, Montreuil, 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)
       ├─ Marguerite of Lorraine (Between 1140 and 1145 - 12 Nov 1194)
       │ Baldwin V of Flanders (1150 - 17 Dec 1195)(m. Apr 1169)
       │    ├─ Isabella of Flanders, Queen Consort of France (23 Apr 1170 Valenciennes, Nord-Pas-de-Calais,
       │    │ France - 15 Mar 1190 Paris, France) =>
       │    │ France - 15 Mar 1190 Paris, France) =>
       │    │ + Philippe II Augustus, King of France (22 Aug 1165 Gonesse, France - 14 Jul 1223 Mantes la Jolie,
       │    │ Yvelines, Île-de-France, France)(m. 28 Apr 1180 Abbey of Saint-Trinité, Bapaume, Pas-de-Calais,
       │    │ France)
       │    │ Yvelines, Île-de-France, France)(m. 28 Apr 1180 Abbey of Saint-Trinité, Bapaume, Pas-de-Calais,
       │    │ France)
       │    ├─ Baldwin I of Flanders, Latin Emperor of Constantinople (Jul 1171 - 11 Jul 1205) =>
       │    │ + Marie of Champagne (Abt 1174 - 9 Aug 1204)(m. 6 Jan 1186)
       │    │ + Peter II of Courtenay, Emperor of Constantinople (Abt 1155 - Bef Jan 1218)(m. Jun 1193)
       │     + Guichard IV de Beaujeu ( - 1216)(m. 1196)
       └─ Guy I (1140 - 1176)
        Mahaud of Burgundy ( - 1192)(m. Abt 1175)
            + Robert I de Wavrin ( - 1215)(m. Bef 1193)