 
| Type | Valeur | 
|---|---|
| Titre | Nithard de Ponthieu, "Find A Grave Index" | 
| Personnes | 
|---|
|  Nithard Comte de Ponthieu | 
| "Find A Grave Index," database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:QVLG-NV3X : 2 July 2020), Nithard de Ponthieu, ; Burial, , ; citing record ID , Find a Grave, http://www.findagrave.com. |