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Male William IV de St. Omer Click to view William IV de St. Omer in the family tree

William IV was born in 1150 in St. Omer,France.  William IV's father was William III de St. Omer and his mother was Matilda UNKNOWN.  His paternal grandparents were William II Chatelain de St. Omer and Melisende de Picquigny.  He was an only child.  He died at the age of 42 in 1192 in Holy Land.


William IV's family with Ida d Avesnes

They had a son named Nicholas.

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