Herfast (Arfastus) de Crepon 
He had a biological son named Osbern de.
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Personal Details
Herfast (Arfastus) de Crepon
Herfast (Arfastus) de was born about 0955 in Arque, Seine-Inferieure, Normandy, France. He died in Crepon, Calvados, Normandy, France.
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Children
Osbern de Crepon , Steward of Normandy
Osbern de was born about 0990 in Crepon, Calvados, Normandy, France. He died in 1036.
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