Herfast (Arfastus) de Crepon

Herfast (Arfastus) de was born about 0955 in Arque, Seine-Inferieure, Normandy, France.  Herfast (Arfastus) de's father was Herbastus Forester of Arque and his mother was Gunnhild Olafsdottir. He had three sisters named Gunnora (Gundra) de, Senfrie (Eva) de and Avelina (Duvelina) de.  He was the second youngest of the four children.  He died in Crepon, Calvados, Normandy, France.

He had a biological son named Osbern de.