Helgaud, Governor of Ponthieu II
- 926(
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- 1 Helgaud, Governor of Ponthieu II [1] d. 926
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- 2 Herluin, Count of Montre (First) II [1.1] d. 945
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- 3 Rotgaire Count of Montreuil [1.1.1] d. 957
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- 4 William, Count of Montreuil I [1.1.1.1] d. 965
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- 4 William, Count of Montreuil I [1.1.1.1]
- 3 Rotgaire Count of Montreuil [1.1.1]
- 2 Herluin, Count of Montre (First) II [1.1]