Érard de Ponthieu
- Born: 887, Montreuil, Seine-Saint-Denis, France
- Marriage (1): Berthilde de Roucy in 915 in Crécy-en-Ponthieu, Somme, France
- Died: 930, Crécy-en-Ponthieu, Somme, France aged 43
FamilySearch ID: G1SF-7SG.
Érard married Berthilde de Roucy, daughter of Renaud DE ROUCY and Ermina d'La Ferté-Milon, in 915 in Crécy-en-Ponthieu, Somme, France. (Berthilde de Roucy was born in 895 in Roucy, Laon, Département de Aisne, Hauts-de-France, France and died in 963 in Ham, Département de Somme, Hauts-de-France, France.)
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