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First Name:


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John de Avesnes, Seigneur de Beaumont

Male - 1283


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Generation: 1

  1. 1.  John de Avesnes, Seigneur de Beaumont (son of Baldwin d'Avesnes); died 1283.

    John — Agnes de Valence. Agnes (daughter of William de Valence, Earl of Pembroke and Joan de Munchensy, Countess of Pembroke) died 31 Dec 1310. [Group Sheet]


Generation: 2

  1. 2.  Baldwin d'Avesnes was born 1219 (son of Burchard of Avesnes d'Avesnes and Margaret II of Constantinople, Countess of Flanders); died 1295.
    Children:
    1. 1. John de Avesnes, Seigneur de Beaumont died 1283.
    2. Beatrix d'Avesnes, Countess of Bar died 1 Mar 1321.


Generation: 3

  1. 4.  Burchard of Avesnes d'Avesnes died Yes, date unknown.

    Burchard — Margaret II of Constantinople, Countess of Flanders. Margaret (daughter of Baldwin I of Constantinople, Emperor of Constantinople and Mary (Marie) of Champagne) was born 2 Jun 1202; died 10 Feb 1280. [Group Sheet]


  2. 5.  Margaret II of Constantinople, Countess of FlandersMargaret II of Constantinople, Countess of Flanders was born 2 Jun 1202 (daughter of Baldwin I of Constantinople, Emperor of Constantinople and Mary (Marie) of Champagne); died 10 Feb 1280.
    Children:
    1. John of Avesnes, Count of Hainaut died 24 Dec 1257.
    2. 2. Baldwin d'Avesnes was born 1219; died 1295.


Generation: 4

  1. 10.  Baldwin I of Constantinople, Emperor of ConstantinopleBaldwin I of Constantinople, Emperor of Constantinople was born Jul 1172 (son of Baldwin V of Hainault, Count of Hainault and Margaret I, Countess of Flanders); died Abt 1205, Adrianople.

    Baldwin married Mary (Marie) of Champagne 6 Jan 1186. Mary (daughter of Henry I the Liberal of Champaigne, Count of Champaigne and Brie and Mary (Marie) of France Capet, Countess of Champagne) was born c .?1174; died 9 Aug 1204, Holy Land. [Group Sheet]


  2. 11.  Mary (Marie) of Champagne was born c .?1174 (daughter of Henry I the Liberal of Champaigne, Count of Champaigne and Brie and Mary (Marie) of France Capet, Countess of Champagne); died 9 Aug 1204, Holy Land.
    Children:
    1. Joan of Flanders, Countess of Flanders was born 1194; died 5 Dec 1244.
    2. 5. Margaret II of Constantinople, Countess of Flanders was born 2 Jun 1202; died 10 Feb 1280.