Descendancy for Gertrude of Saxony (of Süpplingenburg): Cook Ancestry

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1115 - 1143 (28 years)

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1 Gertrude of Saxony (of Süpplingenburg) ^[1] b. 18 Apr 1115 d. 18 Apr 1143
- Henry IV (X) the Proud of Brunswick, Duke of Brawnsweig b. Abt 1100 d. 20 Oct 1139
  - 2 Henry the Lion of Saxony, Duke of Saxony and Bavaria ^[1.1] b. 1129 d. 6 Aug 1195
    - Clementina of Zähringen, Duchess consort of Bavaria and Saxony d. 1175
      - 3 Henry ^[1.1.1] d. Young
      - 3 Gertrude of Bavaria ^[1.1.2] b. Abt 1155 d. 1 Jul 1196
        
        + Frederick IV von Rotenburg, Duke of Rottenburg b. Abt 1145 d. 19 Aug 1167
      - 3 Richenza ^[1.1.3] b. Abt 1157 d. 1167
    - Matilda (Maud) Plantagenet b. Jun 1156 d. 28 Jun 1189
      - 3 Henry V of Zelle Longus, Count Palatine of Rhine ^[1.1.4] b. 1173 d. 28 Apr 1227
        
        Agnes of Hohenstaufen b. 1176 d. 7 or 9 May 1204
        
        4 Irmingard of Zelle Longus ^[1.1.4.1] b. Abt 1200 d. 24 Feb 1260 [ =>]
        
        4 Agnes of the Palatinate, Duchess of Bavaria ^[1.1.4.2] b. 1201 d. 1267 [ =>]
        
        4 Henry VI the Younger, Count Palatine of the Rhine ^[1.1.4.3] b. Abt 1196 d. 26 Apr 1214
      - 3 Otto IV of Brunswick, Holy Roman Emperor ^[1.1.5] b. Abt 1183 d. 19 May 1218
        
        + Beatrice of Swabia Hohenstaufen, Holy Roman Empress and German Queen b. 1198 d. 11 Aug 1212
        
        + Mary of Brabant b. Abt 1191 d. Aft 9 Mar 1260
      - 3 William of Winchester, Lord of Lüneburg ^[1.1.6] b. 11 Apr 1184 d. 13 Dec 1213
        
        Helen of Denmark Valdemarsdottir, Duchess of Luneburg d. 22 Nov 1233
        
        4 Otto I, Duke Brunswick-Lüneburgh ^[1.1.6.1] b. Abt 1204 d. 9 Jun 1252 [ =>]
- + Henry II, Duke of Austria b. 1107 d. 13 Jan 1177