Descendancy for William I, Count of Holland: Genealogy of the Bryan and Martin Families

Genealogy of the Bryan and Martin Families

1165 - 1222 (57 years)

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1 William I, Count of Holland ^[1] b. 1165 d. 1222
- Adelaide, of Guelders b. cir 1165
  - 2 Floris IV, Count of Holland ^[1.1] b. 1210 d. 1234
    - Mechthilde, of Brabant b. cir 1170
      - 3 Alice, of Holland ^[1.1.1] d. cir 1270
        
        John I, Avesnes, Count of Hainault d. cir 1270
        
        4 John II, Avesnes of Holland & Hainault ^[1.1.1.1] d. 1304
        
        Philippina, of Luxemburg b. cir 1175
        
        5 William I, Count of Hainault ^[1.1.1.1.1] b. 1280 d. 1337 [ =>]