Osbern I de BOLEBEC & Avelina de CREPON 
They had a son named Walter I.
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Personal Details
Osbern I de BOLEBEC
Osbern I de was born about 0945 in Longueville, Normandy, France. He died in 1035 in France.
Avelina de CREPON
Avelina de was born about 0960 in Arque, Seine-Inferieure, Normandy, France. She died in Normandy, France.
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Children
Walter I GIFFARD
Walter I was born about 1010 in Longueville, Normandy, France. He died in 1084 in France.