Ponthieu played a small role in the events that led up to the Norman conquest of England in 1066. Harold Godwinson of England was blown ashore at Ponthieu in 1064. He was taken captive by the men of Guy I and held for ransom at the castle of Beaurain. Thinking Harold might be useful to him William II, Duke of Normandy, secured his release. William escorted him to Rouen and gave him many gifts. 