Baudouin I Guillaume de Saint Omer
- Born: Abt 1027, Saint-Omer, Pas-de-Calais, Nord-Pas-de-Calais, France
- Marriage (1): Mahaut II de Créquy
- Died: 1097, Saint-Omer, Pas-de-Calais, Nord-Pas-de-Calais, France aged about 70
FamilySearch ID: GTPT-KND.
Baudouin married Mahaut II de Créquy, daughter of Baudouin II de CREQUY and Margaretha van LEUVEN. (Mahaut II de Créquy was born in 1027 in Créquy, Pas-de-Calais, Hauts-de-France, France and died in 1070 in Créquy, Pas-de-Calais, Hauts-de-France, France.)
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