Eustace I Count of BOULOGNE & Mahaut (Maud) de LOUVAIN 
They had a son named Lambert of.
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Personal Details
Eustace I Count of BOULOGNE
Eustace I Count of was born about 0985 in Boulogne, Artois, France. He died about 1049 in Brabant, Belgium.
Mahaut (Maud) de LOUVAIN
Mahaut (Maud) de was born about 0984 in Louvain, Belgium. She died about 1040.
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Children
Lambert of LENS
Lambert of was born about 1022 in LEns, Normandy, France. He died in 1054 in Bataille de Lille, Flanders.