Family: Guillaume I Count Of Ponthieu-Montreuil / Maude de St. Pol sur Mer de Therouanne (F15448)
m. 939
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 | Rotgaire, Count Of Montreuil (894-957) |
 | Bertha De Boulogne ( -1000) |
| Adelolf de Boulogne, Comte De Boulogne (891-933)
|
| Mahaut De Crequy (889-930) |
| Haldruc De Theroanna (915-964) |
| Arnoul,, Comte de Boulogne (922-1014) |
| Arnold ( Ernulfe) Boulogne (924-972) |
| Arnulf II de BOULOGNE (924-972) |
| Mathilde von Flandern (969- ) |
| Guillaume I Count Of Ponthieu-Montreuil (925-980)
|
| Maude de St. Pol sur Mer de Therouanne (918-965)
|
| Ernicle I Count Of Ponthieu Et Boulogne (941-972) |
| Godehilde De Ponthieu (942-1005)  |