Nielsen Hayden genealogy
Descendants of Henry IX of Bavaria
1074 - 1126 (52 years)Father: Welf I of Bavaria ( - 6 Nov 1101 Paphos, Cyprus)
Mother: Judith of Flanders (Abt 1033 - 5 Mar 1094 Weingarten Abbey, Ravensburg, Upper Swabia, Germany)
Henry IX of Bavaria (1074 - 13 Dec 1126 Ravensburg, Upper Swabia, Germany)
Wulfhilde of Saxony (Abt 1075 - 29 Dec 1126 Weingarten Abbey, Ravensburg, Upper Swabia, Germany)(m. Abt 1100)
   ├─ Matilda of Bavaria ( - 16 Feb 1183)
   │ Gebhard III of Sulzbach (Abt 1114 - 28 Oct 1188)(m. 1129)
   │    ├─ Adelheid von Sulzbach
   │    │ Dietrich IV (Abt 1130 - 1172)
   │    │    ├─ Dietrich V (Between 1160 and 1170 - Bef 1202) =>
   │    │    │ + Margaretha van Holland ( - Aft 1203)
   │    │     + Adelheid von Heinsberg
   │    └─ Elizabeth von Sulzbach ( - 23 Jan 1206)
   │     Rapoto I von Ortenburg (Abt 1106 - 26 Aug 1186)
   │        │ + Gero II von Heunberg ( - Abt 1220)
   │        └─ Heinrich I von Ortenburg (Abt 1170 - 15 Feb 1241) =>
   │         + (Unknown mistress of Heinrich I von Ortenburg)
   ├─ Wulfhild von Bayern ( - Aft 8 May 1160)
   │ Rudolf von Bregenz ( - Between 27 Apr 1160 and 28 Apr 1160)
   │    └─ Elisabeth von Bregenz ( - Aft 1 Jun 1216)
   │     Hugo II von Tübingen ( - 18 Dec 1182)(m. Bef 1 May 1171)
   │         + Mechtilde ( - Aft 12 Jan 1203)
   ├─ Heinrich of Saxony (Abt 1100 - 20 Oct 1139)
   │ Gertrud von Süpplinburg (18 Apr 1115 - Abt 18 Apr 1143)(m. 29 May 1127)
   │    └─ Heinrich of Saxony (1129 - 6 Aug 1195 Braunschweig, Lower Saxony, Germany)
   │     Ida von Bliescastel
   │     :    + Heinrich Burwin I (Bef 1150 - 28 Jan 1227)(m. 1166)
   │     Matilda of England (1156 London, England - 13 Jul 1189)(m. Between 1167 and 1168)
   │        │ + Agnes von Hohenstaufen (1176 - 9 May 1204)(m. Jan 1194)
   │        └─ Wilhelm of Brunswick-Lüneburg (11 Apr 1184 Winchester, Hampshire, England -
   │         13 Dec 1213 Lüneburg, Lower Saxony, Germany) =>
   │         13 Dec 1213 Lüneburg, Lower Saxony, Germany) =>
   │         + Helene of Denmark (Abt 1180 - 22 Nov 1233)(m. Jul 1202 Hamburg, Germany)
   └─ Judith of Bavaria (19 May 1100 - Aft 22 Feb 1130 bur.Waldburg, Heiligen Forst, Alsace)
    Frederick II von Hohenstaufen (1090 - 4 Apr 1147)(m. 1121)
       ├─ Frederick Barbarossa, Holy Roman Emperor (1122 - 10 Jun 1190 Saleph River, Cilicia, Anatolia)
       │ Beatrice of Burgundy (Abt 1144 - 15 Nov 1184 Jouhe, Jura, France)(m. 9 Jun 1156 Würzburg, Germany)
       │    ├─ Heinrich VI, Holy Roman Emperor (Nov 1165 - 28 Sep 1197 Messina, Sicily) =>
       │    │ + Constance of Sicily ( - 27 Nov 1198)(m. 27 Jan 1186 Milan, Lombardy, Italy)
       │    │ + Marguerite de Blois ( - 7 May 1231)(m. Abt 1191)
       │    └─ Philip II, King of Germany (1177 - 21 Jun 1208 Bamberg, Bayern, Germany) =>
       │     + Irene Angelina (Abt 1181 Constantinople - 27 Aug 1208 Hohenstaufen Castle, Bavaria)(m. 25 May 1197)
       └─ Bertha of Swabia (1123 - Aft Mar 1195)
        Matthias I of Lorraine (Abt 1119 - 13 May 1176)(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)