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Male Guillaume IV De Saint-Omer Click to view Guillaume IV De Saint-Omer in the family tree

Guillaume IV was born about 1140.  Guillaume IV's father was Guillaume III De Saint-Omer and his mother was Mathilde De Dixmude-Bevere.  His paternal grandparents were Guillaume II De Saint-Omer and Melissende De Picquigny.  He was an only child.  He died in 1191.


Guillaume IV's family with Ida D'avesnes

‌Guillaume IV and Ida were married in a religious ceremony about 1170.  They had a daughter named Ide.

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