| William III of Ponthieu, Seigneur de Montgomery in Normandy and Count of Ponthieu | |
| B: | 1093 |
| D: | 1172 |
| Robert of Bellême, seigneur de Bellême (or Belèsme), seigneur de Montgomery, viscount of the Hiémois, 3rd Earl of Shrewsbury and Count of Ponthieu | |
| B: | Abt. 1056 |
| D: | Aft. 1130 |