Descendancy for John I von Mecklenburg, Prince of Mecklenburg: Cook Ancestry

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Abt 1211 - 1264 (~ 53 years)

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1 John I von Mecklenburg, Prince of Mecklenburg ^[1] b. Abt 1211 d. 1 Aug 1264
- Luitgard von Henneberg d. 1267
  - 2 Elizabeth von Mecklenburg ^[1.1] d. Bef 6 Feb 1280
    - Gerhard I von Holstein, Count of Holstein b. 1232 d. 21 Dec 1290
      - 3 Gerhard II von Holstein, Count of Plön ^[1.1.1] b. 1254 d. 25 Oct 1312
        
        + Ingeborg Valdemarsdottir d. Abt 1290
      - 3 Henry I von Holstein, Count of Holstein ^[1.1.2] b. 1258 d. 5 Aug 1304
        
        Heilwig von Bronkhorst d. Aft 15 Jul 1310
        
        4 Gerhard III von Holstein, Count of Holstein ^[1.1.2.1] b. Abt 1293 d. 1 Apr 1340 [ =>]
        
        4 Elizabeth von Holstein ^[1.1.2.2] d. Yes, date unknown
        
        4 Adelheid von Holstein ^[1.1.2.3] d. Yes, date unknown [ =>]
      - 3 Hedwig von Holstein ^[1.1.3] d. Abt 1325
        
        Magnus I Ladulås of Sweden Birgersson, King of Sweden d. 18 Dec 1290
        
        4 Eric Magnusson ^[1.1.3.1] d. 1279
        
        4 Birgir of Sweden Magnusson, King of Sweden ^[1.1.3.2] b. 1280 d. 1321 [ =>]
        
        4 Erik Magnusson, Duke of Südermannland ^[1.1.3.3] d. 1318 [ =>]
        
        4 Richiza Magnusdottir, Abbess of St.Klara ^[1.1.3.4] d. Yes, date unknown
        
        4 Ingeborg Magnusdottir ^[1.1.3.5] d. 15 Aug 1319 [ =>]
        
        4 Valdemar of Finland Magnusson, Duke of Finland ^[1.1.3.6] d. 1318 [ =>]