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 Guido (d. between 1208 and 1218), Lord of Noyelles Agnes, abbess in Montreuil Footnotes References 1147 deaths Counts of Ponthieu Year of birth uncertain 12th-century Normans Christians of the Second Crusade