Guy II of Ponthieu
Guy II of Ponthieu (–25 December 1147) 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. Marriage and issue 
His wife was called Ida; he had three children with her:
 John I (d. 1191), Count of Ponthieu
 Guy, (d. between 1208 and 1218), Lord of Noyelles
 Agnes, abbess in Montreuil

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1147 deaths
Counts of Ponthieu
Year of birth uncertain
12th-century Normans
Christians of the Second Crusade