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Male Guiliame IV de FLANDers Click to view Guiliame IV de FLANDers in the family tree

Guiliame IV de was born about 1255 in dendermonde and creevecoeur.  Guiliame IV de's father was Guy de Dampierre Count of Flanders & Namur.  His paternal grandparents were Guillaume II Seigneur De Dampierre and Margaret II Cts de Flanders. He had six brothers and three sisters, named Robert III of, Guillaume IV, Robert III De, Burkhard of, Luik Jean of, Jean I of Dampierre Count of, Margarethe I of, Marie of and Isabeau of.  He was the oldest of the ten children. He had a half-brother and three half-sisters, named Jean I De, Marguerite De, Isabel De and Beatrice.  He died in 1311.


Guiliame IV de's family with Alix de Clermont

‌Guiliame IV de and Alix de were married in a religious ceremony in 1286.  They had three sons named Guillaume II, De, Jean de and Guy V.

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