Guy II of Ponthieu (c. 1120–25 December 1147) was the son of William III of Ponthieu and Helie of Burgundy.
[1] He succeeded his father as Count of Ponthieu before 1129; this was during William's lifetime.
[3] He joined the Second Crusade under King Louis VII of France,[3] and died of a disease on 25 December 1147 in Ephesus.
[3] He was succeeded by his son John I of Ponthieu.
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