Dreux was the son of Robert I de Coucy and Béatrice de Saint-Pôl. The date and place of his birth have not been found.
His wife was Catherine d'Anvers, who he married in ABT 1140 in France. Their only known child was Jacques (c1140-?).
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Robert I de Coucy |
Thomas II de Marle |
Enguerrand I de Boves |
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Ade de Marle |
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Mélisende de Crécy |
Guy de Crécy |
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Béatrice de Saint-Pôl |
Hugues II de Campdavaine |
Hugues I de Saint-Pôl |
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Hélisende de Ponthieu |
Enguerrand II de Ponthieu |
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Adélaïde de Normandie |
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| Association | Relationship |
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| Enguerrand II de Boves (seigneur de Boves, de Coucy, de Marle, de la Fère, de Crécy, de Vervins, de Pinon, de Landousies, de Fountains, etc.) | father? |
| Agnès de Beaugency | mother? |