Eustache I de BOULOGNE & Mahaut de LOUVAIN 
They had a son named Lambert de.
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Personal Details
Eustache I de BOULOGNE
Eustache I de was born about 0995 in Boulogne, Artois, France. He died about 1049 in Brabant, Blgium.
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Children
Lambert de BOULOGNE
Lambert de was born about 1025 in Boulogne, Flanders. He died in 1054 in Kileld in Battle of Lille, Between baldwin Count of Flanders and Emperor Henri III.