Guy II of Ponthieu
Guy II of Ponthieu was the son of William III of Ponthieu and Helie of Burgundy.
Life
He succeeded his father as Count of Ponthieu before 1129; this was during William's lifetime. Around 1137, he founded the Cistercian Valloires Abbey.He joined the Second Crusade under King Louis VII of France, and died of a disease on 25 December 1147 in Ephesus.
He was succeeded by his son John I of Ponthieu.